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Finding the Fourth Proportional to 316,925.78, 437,347.68 and 173,683.22

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Solution

The fourth proportional to 316,925.78, 437,347.68 and 173,683.22 is: 239,677.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,925.78 : 437,347.68 = 173,683.22 : x
  2. Step 2: Convert to fraction form
    316,925.78/437,347.68 = 173,683.22/x
  3. Step 3: Cross multiply
    316,925.78x = 437,347.68 × 173,683.22
  4. Step 4: Simplify right side
    316,925.78x = 75,959,953,321.93
  5. Step 5: Solve for x
    x = 75,959,953,321.93/316,925.78
  6. Step 6: Final answer
    x = 239,677.42

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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.