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Finding the Fourth Proportional to 265,728,382.80, 398,655,559.80 and 136,355,960.40

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Solution

The fourth proportional to 265,728,382.80, 398,655,559.80 and 136,355,960.40 is: 204,566,261.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,728,382.80 : 398,655,559.80 = 136,355,960.40 : x
  2. Step 2: Convert to fraction form
    265,728,382.80/398,655,559.80 = 136,355,960.40/x
  3. Step 3: Cross multiply
    265,728,382.80x = 398,655,559.80 × 136,355,960.40
  4. Step 4: Simplify right side
    265,728,382.80x = 54,359,061,725,328,632
  5. Step 5: Solve for x
    x = 54,359,061,725,328,632/265,728,382.80
  6. Step 6: Final answer
    x = 204,566,261.05

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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.