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Finding the Fourth Proportional to 390,540.59, 585,600.15 and 177,192.07

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Solution

The fourth proportional to 390,540.59, 585,600.15 and 177,192.07 is: 265,692.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,540.59 : 585,600.15 = 177,192.07 : x
  2. Step 2: Convert to fraction form
    390,540.59/585,600.15 = 177,192.07/x
  3. Step 3: Cross multiply
    390,540.59x = 585,600.15 × 177,192.07
  4. Step 4: Simplify right side
    390,540.59x = 103,763,702,770.81
  5. Step 5: Solve for x
    x = 103,763,702,770.81/390,540.59
  6. Step 6: Final answer
    x = 265,692.49

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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.