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Finding the Fourth Proportional to 153,324,978.30, 211,587,363.68 and 83,710,359

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Solution

The fourth proportional to 153,324,978.30, 211,587,363.68 and 83,710,359 is: 115,519,691.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,324,978.30 : 211,587,363.68 = 83,710,359 : x
  2. Step 2: Convert to fraction form
    153,324,978.30/211,587,363.68 = 83,710,359/x
  3. Step 3: Cross multiply
    153,324,978.30x = 211,587,363.68 × 83,710,359
  4. Step 4: Simplify right side
    153,324,978.30x = 17,712,054,173,097,810
  5. Step 5: Solve for x
    x = 17,712,054,173,097,810/153,324,978.30
  6. Step 6: Final answer
    x = 115,519,691.37

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.