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Finding the Fourth Proportional to 261,478.65, 392,216.22 and 173,127.54

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Solution

The fourth proportional to 261,478.65, 392,216.22 and 173,127.54 is: 259,690.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,478.65 : 392,216.22 = 173,127.54 : x
  2. Step 2: Convert to fraction form
    261,478.65/392,216.22 = 173,127.54/x
  3. Step 3: Cross multiply
    261,478.65x = 392,216.22 × 173,127.54
  4. Step 4: Simplify right side
    261,478.65x = 67,903,429,316.70
  5. Step 5: Solve for x
    x = 67,903,429,316.70/261,478.65
  6. Step 6: Final answer
    x = 259,690.15

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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.