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Finding the Fourth Proportional to 442,878,006.60, 664,317,009.90 and 238,804,662.60

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Solution

The fourth proportional to 442,878,006.60, 664,317,009.90 and 238,804,662.60 is: 358,206,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,878,006.60 : 664,317,009.90 = 238,804,662.60 : x
  2. Step 2: Convert to fraction form
    442,878,006.60/664,317,009.90 = 238,804,662.60/x
  3. Step 3: Cross multiply
    442,878,006.60x = 664,317,009.90 × 238,804,662.60
  4. Step 4: Simplify right side
    442,878,006.60x = 158,641,999,408,610,336
  5. Step 5: Solve for x
    x = 158,641,999,408,610,336/442,878,006.60
  6. Step 6: Final answer
    x = 358,206,993.90

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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.