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Finding the Fourth Proportional to 485,848,648.80, 728,772,389.28 and 158,323,645.44

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Solution

The fourth proportional to 485,848,648.80, 728,772,389.28 and 158,323,645.44 is: 237,485,277.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,848,648.80 : 728,772,389.28 = 158,323,645.44 : x
  2. Step 2: Convert to fraction form
    485,848,648.80/728,772,389.28 = 158,323,645.44/x
  3. Step 3: Cross multiply
    485,848,648.80x = 728,772,389.28 × 158,323,645.44
  4. Step 4: Simplify right side
    485,848,648.80x = 115,381,901,366,828,368
  5. Step 5: Solve for x
    x = 115,381,901,366,828,368/485,848,648.80
  6. Step 6: Final answer
    x = 237,485,277.88

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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.