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Finding the Fourth Proportional to 331,857,501.80, 497,786,252.70 and 86,193,978.80

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Solution

The fourth proportional to 331,857,501.80, 497,786,252.70 and 86,193,978.80 is: 129,290,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,857,501.80 : 497,786,252.70 = 86,193,978.80 : x
  2. Step 2: Convert to fraction form
    331,857,501.80/497,786,252.70 = 86,193,978.80/x
  3. Step 3: Cross multiply
    331,857,501.80x = 497,786,252.70 × 86,193,978.80
  4. Step 4: Simplify right side
    331,857,501.80x = 42,906,177,712,155,240
  5. Step 5: Solve for x
    x = 42,906,177,712,155,240/331,857,501.80
  6. Step 6: Final answer
    x = 129,290,968.20

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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.