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Finding the Fourth Proportional to 145,433.44, 218,152.86 and 45,591.40

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Solution

The fourth proportional to 145,433.44, 218,152.86 and 45,591.40 is: 68,387.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,433.44 : 218,152.86 = 45,591.40 : x
  2. Step 2: Convert to fraction form
    145,433.44/218,152.86 = 45,591.40/x
  3. Step 3: Cross multiply
    145,433.44x = 218,152.86 × 45,591.40
  4. Step 4: Simplify right side
    145,433.44x = 9,945,894,301.40
  5. Step 5: Solve for x
    x = 9,945,894,301.40/145,433.44
  6. Step 6: Final answer
    x = 68,387.95

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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.