Home / 381,888,049.20-572,832,073.80-139,724,746.80

Finding the Fourth Proportional to 381,888,049.20, 572,832,073.80 and 139,724,746.80

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Solution

The fourth proportional to 381,888,049.20, 572,832,073.80 and 139,724,746.80 is: 209,587,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,888,049.20 : 572,832,073.80 = 139,724,746.80 : x
  2. Step 2: Convert to fraction form
    381,888,049.20/572,832,073.80 = 139,724,746.80/x
  3. Step 3: Cross multiply
    381,888,049.20x = 572,832,073.80 × 139,724,746.80
  4. Step 4: Simplify right side
    381,888,049.20x = 80,038,816,470,623,920
  5. Step 5: Solve for x
    x = 80,038,816,470,623,920/381,888,049.20
  6. Step 6: Final answer
    x = 209,587,120.20

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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.