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Finding the Fourth Proportional to 151,287.40, 208,774.80 and 83,302.90

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Solution

The fourth proportional to 151,287.40, 208,774.80 and 83,302.90 is: 114,957.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,287.40 : 208,774.80 = 83,302.90 : x
  2. Step 2: Convert to fraction form
    151,287.40/208,774.80 = 83,302.90/x
  3. Step 3: Cross multiply
    151,287.40x = 208,774.80 × 83,302.90
  4. Step 4: Simplify right side
    151,287.40x = 17,391,546,286.92
  5. Step 5: Solve for x
    x = 17,391,546,286.92/151,287.40
  6. Step 6: Final answer
    x = 114,957.00

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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.