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Finding the Fourth Proportional to 261,696.80, 392,545.20 and 173,050.40

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Solution

The fourth proportional to 261,696.80, 392,545.20 and 173,050.40 is: 259,575.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,696.80 : 392,545.20 = 173,050.40 : x
  2. Step 2: Convert to fraction form
    261,696.80/392,545.20 = 173,050.40/x
  3. Step 3: Cross multiply
    261,696.80x = 392,545.20 × 173,050.40
  4. Step 4: Simplify right side
    261,696.80x = 67,930,103,878.08
  5. Step 5: Solve for x
    x = 67,930,103,878.08/261,696.80
  6. Step 6: Final answer
    x = 259,575.60

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1.5x scale

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.