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Finding the Fourth Proportional to 517,497.50, 776,246.25 and 143,520.50

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Solution

The fourth proportional to 517,497.50, 776,246.25 and 143,520.50 is: 215,280.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,497.50 : 776,246.25 = 143,520.50 : x
  2. Step 2: Convert to fraction form
    517,497.50/776,246.25 = 143,520.50/x
  3. Step 3: Cross multiply
    517,497.50x = 776,246.25 × 143,520.50
  4. Step 4: Simplify right side
    517,497.50x = 111,407,249,923.13
  5. Step 5: Solve for x
    x = 111,407,249,923.13/517,497.50
  6. Step 6: Final answer
    x = 215,280.75

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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.