Home / 402,225.57-554,732.01-287,291.43

Finding the Fourth Proportional to 402,225.57, 554,732.01 and 287,291.43

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Solution

The fourth proportional to 402,225.57, 554,732.01 and 287,291.43 is: 396,219.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,225.57 : 554,732.01 = 287,291.43 : x
  2. Step 2: Convert to fraction form
    402,225.57/554,732.01 = 287,291.43/x
  3. Step 3: Cross multiply
    402,225.57x = 554,732.01 × 287,291.43
  4. Step 4: Simplify right side
    402,225.57x = 159,369,752,419.67
  5. Step 5: Solve for x
    x = 159,369,752,419.67/402,225.57
  6. Step 6: Final answer
    x = 396,219.84

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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.