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Finding the Fourth Proportional to 261,765.07, 392,649.03 and 93,291.80

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Solution

The fourth proportional to 261,765.07, 392,649.03 and 93,291.80 is: 139,938.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,765.07 : 392,649.03 = 93,291.80 : x
  2. Step 2: Convert to fraction form
    261,765.07/392,649.03 = 93,291.80/x
  3. Step 3: Cross multiply
    261,765.07x = 392,649.03 × 93,291.80
  4. Step 4: Simplify right side
    261,765.07x = 36,630,932,813.71
  5. Step 5: Solve for x
    x = 36,630,932,813.71/261,765.07
  6. Step 6: Final answer
    x = 139,938.20

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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.