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Finding the Fourth Proportional to 540,319.52, 810,479.28 and 207,817.76

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Solution

The fourth proportional to 540,319.52, 810,479.28 and 207,817.76 is: 311,726.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,319.52 : 810,479.28 = 207,817.76 : x
  2. Step 2: Convert to fraction form
    540,319.52/810,479.28 = 207,817.76/x
  3. Step 3: Cross multiply
    540,319.52x = 810,479.28 × 207,817.76
  4. Step 4: Simplify right side
    540,319.52x = 168,431,988,496.01
  5. Step 5: Solve for x
    x = 168,431,988,496.01/540,319.52
  6. Step 6: Final answer
    x = 311,726.64

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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.