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Finding the Fourth Proportional to 310,358.32, 428,262.70 and 174,370.64

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Solution

The fourth proportional to 310,358.32, 428,262.70 and 174,370.64 is: 240,613.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,358.32 : 428,262.70 = 174,370.64 : x
  2. Step 2: Convert to fraction form
    310,358.32/428,262.70 = 174,370.64/x
  3. Step 3: Cross multiply
    310,358.32x = 428,262.70 × 174,370.64
  4. Step 4: Simplify right side
    310,358.32x = 74,676,441,087.13
  5. Step 5: Solve for x
    x = 74,676,441,087.13/310,358.32
  6. Step 6: Final answer
    x = 240,613.63

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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.