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Finding the Fourth Proportional to 310,322.61, 428,245.38 and 174,356.55

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Solution

The fourth proportional to 310,322.61, 428,245.38 and 174,356.55 is: 240,612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,322.61 : 428,245.38 = 174,356.55 : x
  2. Step 2: Convert to fraction form
    310,322.61/428,245.38 = 174,356.55/x
  3. Step 3: Cross multiply
    310,322.61x = 428,245.38 × 174,356.55
  4. Step 4: Simplify right side
    310,322.61x = 74,667,387,010.24
  5. Step 5: Solve for x
    x = 74,667,387,010.24/310,322.61
  6. Step 6: Final answer
    x = 240,612.14

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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.