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Finding the Fourth Proportional to 479,989.71, 662,373.09 and 265,125.15

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Solution

The fourth proportional to 479,989.71, 662,373.09 and 265,125.15 is: 365,865.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,989.71 : 662,373.09 = 265,125.15 : x
  2. Step 2: Convert to fraction form
    479,989.71/662,373.09 = 265,125.15/x
  3. Step 3: Cross multiply
    479,989.71x = 662,373.09 × 265,125.15
  4. Step 4: Simplify right side
    479,989.71x = 175,611,764,842.21
  5. Step 5: Solve for x
    x = 175,611,764,842.21/479,989.71
  6. Step 6: Final answer
    x = 365,865.69

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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.