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Finding the Fourth Proportional to 439,448.76, 659,225.93 and 155,080.64

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Solution

The fourth proportional to 439,448.76, 659,225.93 and 155,080.64 is: 232,639.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,448.76 : 659,225.93 = 155,080.64 : x
  2. Step 2: Convert to fraction form
    439,448.76/659,225.93 = 155,080.64/x
  3. Step 3: Cross multiply
    439,448.76x = 659,225.93 × 155,080.64
  4. Step 4: Simplify right side
    439,448.76x = 102,233,180,001.66
  5. Step 5: Solve for x
    x = 102,233,180,001.66/439,448.76
  6. Step 6: Final answer
    x = 232,639.59

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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.