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Finding the Fourth Proportional to 457,240.39, 630,991.77 and 253,304.53

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Solution

The fourth proportional to 457,240.39, 630,991.77 and 253,304.53 is: 349,560.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,240.39 : 630,991.77 = 253,304.53 : x
  2. Step 2: Convert to fraction form
    457,240.39/630,991.77 = 253,304.53/x
  3. Step 3: Cross multiply
    457,240.39x = 630,991.77 × 253,304.53
  4. Step 4: Simplify right side
    457,240.39x = 159,833,073,733.72
  5. Step 5: Solve for x
    x = 159,833,073,733.72/457,240.39
  6. Step 6: Final answer
    x = 349,560.27

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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.