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Finding the Fourth Proportional to 260,577.45, 390,866.18 and 92,287.80

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Solution

The fourth proportional to 260,577.45, 390,866.18 and 92,287.80 is: 138,431.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,577.45 : 390,866.18 = 92,287.80 : x
  2. Step 2: Convert to fraction form
    260,577.45/390,866.18 = 92,287.80/x
  3. Step 3: Cross multiply
    260,577.45x = 390,866.18 × 92,287.80
  4. Step 4: Simplify right side
    260,577.45x = 36,072,179,385.17
  5. Step 5: Solve for x
    x = 36,072,179,385.17/260,577.45
  6. Step 6: Final answer
    x = 138,431.70

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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.