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Finding the Fourth Proportional to 359,842,998.82, 539,764,498.08 and 87,213,765.82

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Solution

The fourth proportional to 359,842,998.82, 539,764,498.08 and 87,213,765.82 is: 130,820,648.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,842,998.82 : 539,764,498.08 = 87,213,765.82 : x
  2. Step 2: Convert to fraction form
    359,842,998.82/539,764,498.08 = 87,213,765.82/x
  3. Step 3: Cross multiply
    359,842,998.82x = 539,764,498.08 × 87,213,765.82
  4. Step 4: Simplify right side
    359,842,998.82x = 47,074,894,533,498,960
  5. Step 5: Solve for x
    x = 47,074,894,533,498,960/359,842,998.82
  6. Step 6: Final answer
    x = 130,820,648.69

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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.