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Finding the Fourth Proportional to 268,340.08, 402,582.72 and 90,847.12

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Solution

The fourth proportional to 268,340.08, 402,582.72 and 90,847.12 is: 136,295.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,340.08 : 402,582.72 = 90,847.12 : x
  2. Step 2: Convert to fraction form
    268,340.08/402,582.72 = 90,847.12/x
  3. Step 3: Cross multiply
    268,340.08x = 402,582.72 × 90,847.12
  4. Step 4: Simplify right side
    268,340.08x = 36,573,480,673.77
  5. Step 5: Solve for x
    x = 36,573,480,673.77/268,340.08
  6. Step 6: Final answer
    x = 136,295.26

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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.