Home / 485,277,165.90-727,915,748.85-213,179,373.90

Finding the Fourth Proportional to 485,277,165.90, 727,915,748.85 and 213,179,373.90

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Solution

The fourth proportional to 485,277,165.90, 727,915,748.85 and 213,179,373.90 is: 319,769,060.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,277,165.90 : 727,915,748.85 = 213,179,373.90 : x
  2. Step 2: Convert to fraction form
    485,277,165.90/727,915,748.85 = 213,179,373.90/x
  3. Step 3: Cross multiply
    485,277,165.90x = 727,915,748.85 × 213,179,373.90
  4. Step 4: Simplify right side
    485,277,165.90x = 155,176,623,591,792,640
  5. Step 5: Solve for x
    x = 155,176,623,591,792,640/485,277,165.90
  6. Step 6: Final answer
    x = 319,769,060.85

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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.