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Finding the Fourth Proportional to 265,724,446.80, 398,586,670.20 and 149,020,003.20

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Solution

The fourth proportional to 265,724,446.80, 398,586,670.20 and 149,020,003.20 is: 223,530,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,724,446.80 : 398,586,670.20 = 149,020,003.20 : x
  2. Step 2: Convert to fraction form
    265,724,446.80/398,586,670.20 = 149,020,003.20/x
  3. Step 3: Cross multiply
    265,724,446.80x = 398,586,670.20 × 149,020,003.20
  4. Step 4: Simplify right side
    265,724,446.80x = 59,397,386,868,681,336
  5. Step 5: Solve for x
    x = 59,397,386,868,681,336/265,724,446.80
  6. Step 6: Final answer
    x = 223,530,004.80

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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.