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Finding the Fourth Proportional to 128,248.79, 192,373.24 and 33,478.71

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Solution

The fourth proportional to 128,248.79, 192,373.24 and 33,478.71 is: 50,218.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,248.79 : 192,373.24 = 33,478.71 : x
  2. Step 2: Convert to fraction form
    128,248.79/192,373.24 = 33,478.71/x
  3. Step 3: Cross multiply
    128,248.79x = 192,373.24 × 33,478.71
  4. Step 4: Simplify right side
    128,248.79x = 6,440,407,830.02
  5. Step 5: Solve for x
    x = 6,440,407,830.02/128,248.79
  6. Step 6: Final answer
    x = 50,218.08

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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.