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Finding the Fourth Proportional to 571,203.55, 855,904.10 and 210,878.49

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Solution

The fourth proportional to 571,203.55, 855,904.10 and 210,878.49 is: 315,985.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,203.55 : 855,904.10 = 210,878.49 : x
  2. Step 2: Convert to fraction form
    571,203.55/855,904.10 = 210,878.49/x
  3. Step 3: Cross multiply
    571,203.55x = 855,904.10 × 210,878.49
  4. Step 4: Simplify right side
    571,203.55x = 180,491,763,138.42
  5. Step 5: Solve for x
    x = 180,491,763,138.42/571,203.55
  6. Step 6: Final answer
    x = 315,985.02

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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.