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Finding the Fourth Proportional to 260,697.79, 359,763.88 and 145,981.44

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Solution

The fourth proportional to 260,697.79, 359,763.88 and 145,981.44 is: 201,454.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,697.79 : 359,763.88 = 145,981.44 : x
  2. Step 2: Convert to fraction form
    260,697.79/359,763.88 = 145,981.44/x
  3. Step 3: Cross multiply
    260,697.79x = 359,763.88 × 145,981.44
  4. Step 4: Simplify right side
    260,697.79x = 52,518,849,171.15
  5. Step 5: Solve for x
    x = 52,518,849,171.15/260,697.79
  6. Step 6: Final answer
    x = 201,454.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.