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Finding the Fourth Proportional to 442,878,458.60, 664,317,687.90 and 238,805,114.60

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Solution

The fourth proportional to 442,878,458.60, 664,317,687.90 and 238,805,114.60 is: 358,207,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,878,458.60 : 664,317,687.90 = 238,805,114.60 : x
  2. Step 2: Convert to fraction form
    442,878,458.60/664,317,687.90 = 238,805,114.60/x
  3. Step 3: Cross multiply
    442,878,458.60x = 664,317,687.90 × 238,805,114.60
  4. Step 4: Simplify right side
    442,878,458.60x = 158,642,461,589,766,528
  5. Step 5: Solve for x
    x = 158,642,461,589,766,528/442,878,458.60
  6. Step 6: Final answer
    x = 358,207,671.90

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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.