Home / 288,149,510.40-397,646,447.40-155,990,503.80

Finding the Fourth Proportional to 288,149,510.40, 397,646,447.40 and 155,990,503.80

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Solution

The fourth proportional to 288,149,510.40, 397,646,447.40 and 155,990,503.80 is: 215,266,961.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,149,510.40 : 397,646,447.40 = 155,990,503.80 : x
  2. Step 2: Convert to fraction form
    288,149,510.40/397,646,447.40 = 155,990,503.80/x
  3. Step 3: Cross multiply
    288,149,510.40x = 397,646,447.40 × 155,990,503.80
  4. Step 4: Simplify right side
    288,149,510.40x = 62,029,069,664,206,200
  5. Step 5: Solve for x
    x = 62,029,069,664,206,200/288,149,510.40
  6. Step 6: Final answer
    x = 215,266,961.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.