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Finding the Fourth Proportional to 153,908.40, 230,862.60 and 145,306.80

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Solution

The fourth proportional to 153,908.40, 230,862.60 and 145,306.80 is: 217,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,908.40 : 230,862.60 = 145,306.80 : x
  2. Step 2: Convert to fraction form
    153,908.40/230,862.60 = 145,306.80/x
  3. Step 3: Cross multiply
    153,908.40x = 230,862.60 × 145,306.80
  4. Step 4: Simplify right side
    153,908.40x = 33,545,905,645.68
  5. Step 5: Solve for x
    x = 33,545,905,645.68/153,908.40
  6. Step 6: Final answer
    x = 217,960.20

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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.