Home / 261,135.02-391,702.53-172,367.76

Finding the Fourth Proportional to 261,135.02, 391,702.53 and 172,367.76

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Solution

The fourth proportional to 261,135.02, 391,702.53 and 172,367.76 is: 258,551.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,135.02 : 391,702.53 = 172,367.76 : x
  2. Step 2: Convert to fraction form
    261,135.02/391,702.53 = 172,367.76/x
  3. Step 3: Cross multiply
    261,135.02x = 391,702.53 × 172,367.76
  4. Step 4: Simplify right side
    261,135.02x = 67,516,887,682.43
  5. Step 5: Solve for x
    x = 67,516,887,682.43/261,135.02
  6. Step 6: Final answer
    x = 258,551.64

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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.