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Finding the Fourth Proportional to 310,318.82, 428,240.35 and 174,352.69

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Solution

The fourth proportional to 310,318.82, 428,240.35 and 174,352.69 is: 240,606.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,318.82 : 428,240.35 = 174,352.69 : x
  2. Step 2: Convert to fraction form
    310,318.82/428,240.35 = 174,352.69/x
  3. Step 3: Cross multiply
    310,318.82x = 428,240.35 × 174,352.69
  4. Step 4: Simplify right side
    310,318.82x = 74,664,856,989.04
  5. Step 5: Solve for x
    x = 74,664,856,989.04/310,318.82
  6. Step 6: Final answer
    x = 240,606.92

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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.