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Finding the Fourth Proportional to 479,987.10, 662,378.04 and 265,142.16

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Solution

The fourth proportional to 479,987.10, 662,378.04 and 265,142.16 is: 365,893.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,987.10 : 662,378.04 = 265,142.16 : x
  2. Step 2: Convert to fraction form
    479,987.10/662,378.04 = 265,142.16/x
  3. Step 3: Cross multiply
    479,987.10x = 662,378.04 × 265,142.16
  4. Step 4: Simplify right side
    479,987.10x = 175,624,344,262.17
  5. Step 5: Solve for x
    x = 175,624,344,262.17/479,987.10
  6. Step 6: Final answer
    x = 365,893.88

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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.