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Finding the Fourth Proportional to 503,939,374.80, 755,909,062.20 and 140,433,730.80

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Solution

The fourth proportional to 503,939,374.80, 755,909,062.20 and 140,433,730.80 is: 210,650,596.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,939,374.80 : 755,909,062.20 = 140,433,730.80 : x
  2. Step 2: Convert to fraction form
    503,939,374.80/755,909,062.20 = 140,433,730.80/x
  3. Step 3: Cross multiply
    503,939,374.80x = 755,909,062.20 × 140,433,730.80
  4. Step 4: Simplify right side
    503,939,374.80x = 106,155,129,750,275,264
  5. Step 5: Solve for x
    x = 106,155,129,750,275,264/503,939,374.80
  6. Step 6: Final answer
    x = 210,650,596.20

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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.