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Finding the Fourth Proportional to 503,939,401.80, 755,909,102.70 and 140,433,757.80

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Solution

The fourth proportional to 503,939,401.80, 755,909,102.70 and 140,433,757.80 is: 210,650,636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,939,401.80 : 755,909,102.70 = 140,433,757.80 : x
  2. Step 2: Convert to fraction form
    503,939,401.80/755,909,102.70 = 140,433,757.80/x
  3. Step 3: Cross multiply
    503,939,401.80x = 755,909,102.70 × 140,433,757.80
  4. Step 4: Simplify right side
    503,939,401.80x = 106,155,155,847,387,136
  5. Step 5: Solve for x
    x = 106,155,155,847,387,136/503,939,401.80
  6. Step 6: Final answer
    x = 210,650,636.70

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1.5x scale

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.