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Finding the Fourth Proportional to 460,840.88, 690,639.24 and 239,380.40

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Solution

The fourth proportional to 460,840.88, 690,639.24 and 239,380.40 is: 358,747.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,840.88 : 690,639.24 = 239,380.40 : x
  2. Step 2: Convert to fraction form
    460,840.88/690,639.24 = 239,380.40/x
  3. Step 3: Cross multiply
    460,840.88x = 690,639.24 × 239,380.40
  4. Step 4: Simplify right side
    460,840.88x = 165,325,497,526.90
  5. Step 5: Solve for x
    x = 165,325,497,526.90/460,840.88
  6. Step 6: Final answer
    x = 358,747.47

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1.5x scale

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.