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Finding the Fourth Proportional to 561,151.20, 841,726.80 and 372,194.40

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Solution

The fourth proportional to 561,151.20, 841,726.80 and 372,194.40 is: 558,291.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,151.20 : 841,726.80 = 372,194.40 : x
  2. Step 2: Convert to fraction form
    561,151.20/841,726.80 = 372,194.40/x
  3. Step 3: Cross multiply
    561,151.20x = 841,726.80 × 372,194.40
  4. Step 4: Simplify right side
    561,151.20x = 313,286,001,289.92
  5. Step 5: Solve for x
    x = 313,286,001,289.92/561,151.20
  6. Step 6: Final answer
    x = 558,291.60

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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.