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Finding the Fourth Proportional to 549,805.80, 758,752.54 and 308,079.42

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Solution

The fourth proportional to 549,805.80, 758,752.54 and 308,079.42 is: 425,161.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,805.80 : 758,752.54 = 308,079.42 : x
  2. Step 2: Convert to fraction form
    549,805.80/758,752.54 = 308,079.42/x
  3. Step 3: Cross multiply
    549,805.80x = 758,752.54 × 308,079.42
  4. Step 4: Simplify right side
    549,805.80x = 233,756,046,099.65
  5. Step 5: Solve for x
    x = 233,756,046,099.65/549,805.80
  6. Step 6: Final answer
    x = 425,161.11

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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.