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Finding the Fourth Proportional to 540,318.52, 810,477.78 and 207,816.76

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Solution

The fourth proportional to 540,318.52, 810,477.78 and 207,816.76 is: 311,725.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,318.52 : 810,477.78 = 207,816.76 : x
  2. Step 2: Convert to fraction form
    540,318.52/810,477.78 = 207,816.76/x
  3. Step 3: Cross multiply
    540,318.52x = 810,477.78 × 207,816.76
  4. Step 4: Simplify right side
    540,318.52x = 168,430,866,291.59
  5. Step 5: Solve for x
    x = 168,430,866,291.59/540,318.52
  6. Step 6: Final answer
    x = 311,725.14

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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.