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Finding the Fourth Proportional to 486,934.40, 730,401.60 and 154,510.40

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Solution

The fourth proportional to 486,934.40, 730,401.60 and 154,510.40 is: 231,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,934.40 : 730,401.60 = 154,510.40 : x
  2. Step 2: Convert to fraction form
    486,934.40/730,401.60 = 154,510.40/x
  3. Step 3: Cross multiply
    486,934.40x = 730,401.60 × 154,510.40
  4. Step 4: Simplify right side
    486,934.40x = 112,854,643,376.64
  5. Step 5: Solve for x
    x = 112,854,643,376.64/486,934.40
  6. Step 6: Final answer
    x = 231,765.60

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Similar ratio
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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.