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Finding the Fourth Proportional to 402,854.32, 555,927.24 and 221,565.52

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Solution

The fourth proportional to 402,854.32, 555,927.24 and 221,565.52 is: 305,753.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,854.32 : 555,927.24 = 221,565.52 : x
  2. Step 2: Convert to fraction form
    402,854.32/555,927.24 = 221,565.52/x
  3. Step 3: Cross multiply
    402,854.32x = 555,927.24 × 221,565.52
  4. Step 4: Simplify right side
    402,854.32x = 123,174,308,012.77
  5. Step 5: Solve for x
    x = 123,174,308,012.77/402,854.32
  6. Step 6: Final answer
    x = 305,753.97

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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.