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Finding the Fourth Proportional to 457,129.04, 630,904.20 and 255,938

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Solution

The fourth proportional to 457,129.04, 630,904.20 and 255,938 is: 353,231.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,129.04 : 630,904.20 = 255,938 : x
  2. Step 2: Convert to fraction form
    457,129.04/630,904.20 = 255,938/x
  3. Step 3: Cross multiply
    457,129.04x = 630,904.20 × 255,938
  4. Step 4: Simplify right side
    457,129.04x = 161,472,359,139.60
  5. Step 5: Solve for x
    x = 161,472,359,139.60/457,129.04
  6. Step 6: Final answer
    x = 353,231.46

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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.