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Finding the Fourth Proportional to 239,169,971.90, 358,754,957.85 and 218,006,810.30

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Solution

The fourth proportional to 239,169,971.90, 358,754,957.85 and 218,006,810.30 is: 327,010,215.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,169,971.90 : 358,754,957.85 = 218,006,810.30 : x
  2. Step 2: Convert to fraction form
    239,169,971.90/358,754,957.85 = 218,006,810.30/x
  3. Step 3: Cross multiply
    239,169,971.90x = 358,754,957.85 × 218,006,810.30
  4. Step 4: Simplify right side
    239,169,971.90x = 78,211,024,040,189,456
  5. Step 5: Solve for x
    x = 78,211,024,040,189,456/239,169,971.90
  6. Step 6: Final answer
    x = 327,010,215.45

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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.