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Finding the Fourth Proportional to 310,316.65, 428,250.20 and 174,350.86

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Solution

The fourth proportional to 310,316.65, 428,250.20 and 174,350.86 is: 240,611.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,316.65 : 428,250.20 = 174,350.86 : x
  2. Step 2: Convert to fraction form
    310,316.65/428,250.20 = 174,350.86/x
  3. Step 3: Cross multiply
    310,316.65x = 428,250.20 × 174,350.86
  4. Step 4: Simplify right side
    310,316.65x = 74,665,790,665.17
  5. Step 5: Solve for x
    x = 74,665,790,665.17/310,316.65
  6. Step 6: Final answer
    x = 240,611.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.