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Finding the Fourth Proportional to 264,017.60, 395,929.20 and 86,530.40

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Solution

The fourth proportional to 264,017.60, 395,929.20 and 86,530.40 is: 129,763.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,017.60 : 395,929.20 = 86,530.40 : x
  2. Step 2: Convert to fraction form
    264,017.60/395,929.20 = 86,530.40/x
  3. Step 3: Cross multiply
    264,017.60x = 395,929.20 × 86,530.40
  4. Step 4: Simplify right side
    264,017.60x = 34,259,912,047.68
  5. Step 5: Solve for x
    x = 34,259,912,047.68/264,017.60
  6. Step 6: Final answer
    x = 129,763.74

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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.