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Finding the Fourth Proportional to 402,534.86, 555,486.36 and 230,447.12

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Solution

The fourth proportional to 402,534.86, 555,486.36 and 230,447.12 is: 318,010.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,534.86 : 555,486.36 = 230,447.12 : x
  2. Step 2: Convert to fraction form
    402,534.86/555,486.36 = 230,447.12/x
  3. Step 3: Cross multiply
    402,534.86x = 555,486.36 × 230,447.12
  4. Step 4: Simplify right side
    402,534.86x = 128,010,231,861.28
  5. Step 5: Solve for x
    x = 128,010,231,861.28/402,534.86
  6. Step 6: Final answer
    x = 318,010.30

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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.