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Finding the Fourth Proportional to 265,724,315.80, 398,586,473.70 and 149,019,872.20

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Solution

The fourth proportional to 265,724,315.80, 398,586,473.70 and 149,019,872.20 is: 223,529,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,724,315.80 : 398,586,473.70 = 149,019,872.20 : x
  2. Step 2: Convert to fraction form
    265,724,315.80/398,586,473.70 = 149,019,872.20/x
  3. Step 3: Cross multiply
    265,724,315.80x = 398,586,473.70 × 149,019,872.20
  4. Step 4: Simplify right side
    265,724,315.80x = 59,397,305,371,422,656
  5. Step 5: Solve for x
    x = 59,397,305,371,422,656/265,724,315.80
  6. Step 6: Final answer
    x = 223,529,808.30

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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.