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Finding the Fourth Proportional to 571,018.10, 856,235.55 and 211,170.74

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Solution

The fourth proportional to 571,018.10, 856,235.55 and 211,170.74 is: 316,648.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,018.10 : 856,235.55 = 211,170.74 : x
  2. Step 2: Convert to fraction form
    571,018.10/856,235.55 = 211,170.74/x
  3. Step 3: Cross multiply
    571,018.10x = 856,235.55 × 211,170.74
  4. Step 4: Simplify right side
    571,018.10x = 180,811,894,707.81
  5. Step 5: Solve for x
    x = 180,811,894,707.81/571,018.10
  6. Step 6: Final answer
    x = 316,648.27

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.