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Finding the Fourth Proportional to 155,446.40, 214,516.02 and 88,378.40

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Solution

The fourth proportional to 155,446.40, 214,516.02 and 88,378.40 is: 121,962.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,446.40 : 214,516.02 = 88,378.40 : x
  2. Step 2: Convert to fraction form
    155,446.40/214,516.02 = 88,378.40/x
  3. Step 3: Cross multiply
    155,446.40x = 214,516.02 × 88,378.40
  4. Step 4: Simplify right side
    155,446.40x = 18,958,582,621.97
  5. Step 5: Solve for x
    x = 18,958,582,621.97/155,446.40
  6. Step 6: Final answer
    x = 121,962.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.