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Finding the Fourth Proportional to 457,486.12, 631,330.92 and 256,282.12

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Solution

The fourth proportional to 457,486.12, 631,330.92 and 256,282.12 is: 353,669.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,486.12 : 631,330.92 = 256,282.12 : x
  2. Step 2: Convert to fraction form
    457,486.12/631,330.92 = 256,282.12/x
  3. Step 3: Cross multiply
    457,486.12x = 631,330.92 × 256,282.12
  4. Step 4: Simplify right side
    457,486.12x = 161,798,826,599.15
  5. Step 5: Solve for x
    x = 161,798,826,599.15/457,486.12
  6. Step 6: Final answer
    x = 353,669.37

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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.