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Finding the Fourth Proportional to 402,536.71, 555,553.22 and 259,712.25

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Solution

The fourth proportional to 402,536.71, 555,553.22 and 259,712.25 is: 358,436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,536.71 : 555,553.22 = 259,712.25 : x
  2. Step 2: Convert to fraction form
    402,536.71/555,553.22 = 259,712.25/x
  3. Step 3: Cross multiply
    402,536.71x = 555,553.22 × 259,712.25
  4. Step 4: Simplify right side
    402,536.71x = 144,283,976,760.95
  5. Step 5: Solve for x
    x = 144,283,976,760.95/402,536.71
  6. Step 6: Final answer
    x = 358,436.82

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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.