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Finding the Fourth Proportional to 486,995.88, 730,705.02 and 171,678.12

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Solution

The fourth proportional to 486,995.88, 730,705.02 and 171,678.12 is: 257,591.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,995.88 : 730,705.02 = 171,678.12 : x
  2. Step 2: Convert to fraction form
    486,995.88/730,705.02 = 171,678.12/x
  3. Step 3: Cross multiply
    486,995.88x = 730,705.02 × 171,678.12
  4. Step 4: Simplify right side
    486,995.88x = 125,446,064,108.16
  5. Step 5: Solve for x
    x = 125,446,064,108.16/486,995.88
  6. Step 6: Final answer
    x = 257,591.63

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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.