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Finding the Fourth Proportional to 315,980.38, 473,874.18 and 166,139.38

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Solution

The fourth proportional to 315,980.38, 473,874.18 and 166,139.38 is: 249,158.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,980.38 : 473,874.18 = 166,139.38 : x
  2. Step 2: Convert to fraction form
    315,980.38/473,874.18 = 166,139.38/x
  3. Step 3: Cross multiply
    315,980.38x = 473,874.18 × 166,139.38
  4. Step 4: Simplify right side
    315,980.38x = 78,729,162,463.21
  5. Step 5: Solve for x
    x = 78,729,162,463.21/315,980.38
  6. Step 6: Final answer
    x = 249,158.39

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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.