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Finding the Fourth Proportional to 319,543.59, 479,563.25 and 120,045.45

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Solution

The fourth proportional to 319,543.59, 479,563.25 and 120,045.45 is: 180,161.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,543.59 : 479,563.25 = 120,045.45 : x
  2. Step 2: Convert to fraction form
    319,543.59/479,563.25 = 120,045.45/x
  3. Step 3: Cross multiply
    319,543.59x = 479,563.25 × 120,045.45
  4. Step 4: Simplify right side
    319,543.59x = 57,569,385,549.49
  5. Step 5: Solve for x
    x = 57,569,385,549.49/319,543.59
  6. Step 6: Final answer
    x = 180,161.29

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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.