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Finding the Fourth Proportional to 659,640.52, 989,501.80 and 238,920.04

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Solution

The fourth proportional to 659,640.52, 989,501.80 and 238,920.04 is: 358,394.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,640.52 : 989,501.80 = 238,920.04 : x
  2. Step 2: Convert to fraction form
    659,640.52/989,501.80 = 238,920.04/x
  3. Step 3: Cross multiply
    659,640.52x = 989,501.80 × 238,920.04
  4. Step 4: Simplify right side
    659,640.52x = 236,411,809,636.07
  5. Step 5: Solve for x
    x = 236,411,809,636.07/659,640.52
  6. Step 6: Final answer
    x = 358,394.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.