Home / 442,840,066.90-664,260,100.35-212,753,670.10

Finding the Fourth Proportional to 442,840,066.90, 664,260,100.35 and 212,753,670.10

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Solution

The fourth proportional to 442,840,066.90, 664,260,100.35 and 212,753,670.10 is: 319,130,505.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,840,066.90 : 664,260,100.35 = 212,753,670.10 : x
  2. Step 2: Convert to fraction form
    442,840,066.90/664,260,100.35 = 212,753,670.10/x
  3. Step 3: Cross multiply
    442,840,066.90x = 664,260,100.35 × 212,753,670.10
  4. Step 4: Simplify right side
    442,840,066.90x = 141,323,774,250,456,800
  5. Step 5: Solve for x
    x = 141,323,774,250,456,800/442,840,066.90
  6. Step 6: Final answer
    x = 319,130,505.15

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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.