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Finding the Fourth Proportional to 316,934.79, 474,330.54 and 308,405.49

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Solution

The fourth proportional to 316,934.79, 474,330.54 and 308,405.49 is: 461,565.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,934.79 : 474,330.54 = 308,405.49 : x
  2. Step 2: Convert to fraction form
    316,934.79/474,330.54 = 308,405.49/x
  3. Step 3: Cross multiply
    316,934.79x = 474,330.54 × 308,405.49
  4. Step 4: Simplify right side
    316,934.79x = 146,286,142,610.67
  5. Step 5: Solve for x
    x = 146,286,142,610.67/316,934.79
  6. Step 6: Final answer
    x = 461,565.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.