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Finding the Fourth Proportional to 316,776.78, 475,321.29 and 148,308.51

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Solution

The fourth proportional to 316,776.78, 475,321.29 and 148,308.51 is: 222,535.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,776.78 : 475,321.29 = 148,308.51 : x
  2. Step 2: Convert to fraction form
    316,776.78/475,321.29 = 148,308.51/x
  3. Step 3: Cross multiply
    316,776.78x = 475,321.29 × 148,308.51
  4. Step 4: Simplify right side
    316,776.78x = 70,494,192,291.18
  5. Step 5: Solve for x
    x = 70,494,192,291.18/316,776.78
  6. Step 6: Final answer
    x = 222,535.86

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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.