Home / 390,974.97-539,385.07-237,890.44

Finding the Fourth Proportional to 390,974.97, 539,385.07 and 237,890.44

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Solution

The fourth proportional to 390,974.97, 539,385.07 and 237,890.44 is: 328,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,974.97 : 539,385.07 = 237,890.44 : x
  2. Step 2: Convert to fraction form
    390,974.97/539,385.07 = 237,890.44/x
  3. Step 3: Cross multiply
    390,974.97x = 539,385.07 × 237,890.44
  4. Step 4: Simplify right side
    390,974.97x = 128,314,551,631.73
  5. Step 5: Solve for x
    x = 128,314,551,631.73/390,974.97
  6. Step 6: Final answer
    x = 328,191.22

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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.