Home / 218,678,493.60-328,017,740.40-127,755,280.80

Finding the Fourth Proportional to 218,678,493.60, 328,017,740.40 and 127,755,280.80

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Solution

The fourth proportional to 218,678,493.60, 328,017,740.40 and 127,755,280.80 is: 191,632,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,678,493.60 : 328,017,740.40 = 127,755,280.80 : x
  2. Step 2: Convert to fraction form
    218,678,493.60/328,017,740.40 = 127,755,280.80/x
  3. Step 3: Cross multiply
    218,678,493.60x = 328,017,740.40 × 127,755,280.80
  4. Step 4: Simplify right side
    218,678,493.60x = 41,905,998,532,183,504
  5. Step 5: Solve for x
    x = 41,905,998,532,183,504/218,678,493.60
  6. Step 6: Final answer
    x = 191,632,921.20

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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.