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Finding the Fourth Proportional to 310,327.20, 465,490.80 and 123,338.70

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Solution

The fourth proportional to 310,327.20, 465,490.80 and 123,338.70 is: 185,008.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,327.20 : 465,490.80 = 123,338.70 : x
  2. Step 2: Convert to fraction form
    310,327.20/465,490.80 = 123,338.70/x
  3. Step 3: Cross multiply
    310,327.20x = 465,490.80 × 123,338.70
  4. Step 4: Simplify right side
    310,327.20x = 57,413,030,133.96
  5. Step 5: Solve for x
    x = 57,413,030,133.96/310,327.20
  6. Step 6: Final answer
    x = 185,008.05

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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.