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Finding the Fourth Proportional to 458,786.59, 688,186.81 and 159,276.70

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Solution

The fourth proportional to 458,786.59, 688,186.81 and 159,276.70 is: 238,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,786.59 : 688,186.81 = 159,276.70 : x
  2. Step 2: Convert to fraction form
    458,786.59/688,186.81 = 159,276.70/x
  3. Step 3: Cross multiply
    458,786.59x = 688,186.81 × 159,276.70
  4. Step 4: Simplify right side
    458,786.59x = 109,612,124,080.33
  5. Step 5: Solve for x
    x = 109,612,124,080.33/458,786.59
  6. Step 6: Final answer
    x = 238,917.45

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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.