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Finding the Fourth Proportional to 402,767.55, 555,810.12 and 219,002.13

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Solution

The fourth proportional to 402,767.55, 555,810.12 and 219,002.13 is: 302,217.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,767.55 : 555,810.12 = 219,002.13 : x
  2. Step 2: Convert to fraction form
    402,767.55/555,810.12 = 219,002.13/x
  3. Step 3: Cross multiply
    402,767.55x = 555,810.12 × 219,002.13
  4. Step 4: Simplify right side
    402,767.55x = 121,723,600,155.56
  5. Step 5: Solve for x
    x = 121,723,600,155.56/402,767.55
  6. Step 6: Final answer
    x = 302,217.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.