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Finding the Fourth Proportional to 485,718.85, 670,294.93 and 270,872.49

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Solution

The fourth proportional to 485,718.85, 670,294.93 and 270,872.49 is: 373,805.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,718.85 : 670,294.93 = 270,872.49 : x
  2. Step 2: Convert to fraction form
    485,718.85/670,294.93 = 270,872.49/x
  3. Step 3: Cross multiply
    485,718.85x = 670,294.93 × 270,872.49
  4. Step 4: Simplify right side
    485,718.85x = 181,564,456,723.48
  5. Step 5: Solve for x
    x = 181,564,456,723.48/485,718.85
  6. Step 6: Final answer
    x = 373,805.66

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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.