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Finding the Fourth Proportional to 659,908.50, 989,862.75 and 239,184.78

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Solution

The fourth proportional to 659,908.50, 989,862.75 and 239,184.78 is: 358,777.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,908.50 : 989,862.75 = 239,184.78 : x
  2. Step 2: Convert to fraction form
    659,908.50/989,862.75 = 239,184.78/x
  3. Step 3: Cross multiply
    659,908.50x = 989,862.75 × 239,184.78
  4. Step 4: Simplify right side
    659,908.50x = 236,760,104,088.95
  5. Step 5: Solve for x
    x = 236,760,104,088.95/659,908.50
  6. Step 6: Final answer
    x = 358,777.17

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Double scale
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Similar ratio
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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.