Home / 317,678.31-438,403.73-172,490.27

Finding the Fourth Proportional to 317,678.31, 438,403.73 and 172,490.27

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Solution

The fourth proportional to 317,678.31, 438,403.73 and 172,490.27 is: 238,040.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,678.31 : 438,403.73 = 172,490.27 : x
  2. Step 2: Convert to fraction form
    317,678.31/438,403.73 = 172,490.27/x
  3. Step 3: Cross multiply
    317,678.31x = 438,403.73 × 172,490.27
  4. Step 4: Simplify right side
    317,678.31x = 75,620,374,702.24
  5. Step 5: Solve for x
    x = 75,620,374,702.24/317,678.31
  6. Step 6: Final answer
    x = 238,040.72

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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.