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Finding the Fourth Proportional to 402,276.92, 555,080.50 and 232,478.28

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Solution

The fourth proportional to 402,276.92, 555,080.50 and 232,478.28 is: 320,784.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,276.92 : 555,080.50 = 232,478.28 : x
  2. Step 2: Convert to fraction form
    402,276.92/555,080.50 = 232,478.28/x
  3. Step 3: Cross multiply
    402,276.92x = 555,080.50 × 232,478.28
  4. Step 4: Simplify right side
    402,276.92x = 129,044,159,901.54
  5. Step 5: Solve for x
    x = 129,044,159,901.54/402,276.92
  6. Step 6: Final answer
    x = 320,784.40

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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.