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Finding the Fourth Proportional to 549,718.31, 758,559.93 and 307,949.61

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Solution

The fourth proportional to 549,718.31, 758,559.93 and 307,949.61 is: 424,941.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,718.31 : 758,559.93 = 307,949.61 : x
  2. Step 2: Convert to fraction form
    549,718.31/758,559.93 = 307,949.61/x
  3. Step 3: Cross multiply
    549,718.31x = 758,559.93 × 307,949.61
  4. Step 4: Simplify right side
    549,718.31x = 233,598,234,605.13
  5. Step 5: Solve for x
    x = 233,598,234,605.13/549,718.31
  6. Step 6: Final answer
    x = 424,941.71

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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.