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Finding the Fourth Proportional to 474,830.70, 712,246.05 and 142,406.70

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Solution

The fourth proportional to 474,830.70, 712,246.05 and 142,406.70 is: 213,610.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,830.70 : 712,246.05 = 142,406.70 : x
  2. Step 2: Convert to fraction form
    474,830.70/712,246.05 = 142,406.70/x
  3. Step 3: Cross multiply
    474,830.70x = 712,246.05 × 142,406.70
  4. Step 4: Simplify right side
    474,830.70x = 101,428,609,568.54
  5. Step 5: Solve for x
    x = 101,428,609,568.54/474,830.70
  6. Step 6: Final answer
    x = 213,610.05

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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.