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Finding the Fourth Proportional to 549,719.31, 758,561.31 and 307,950.61

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Solution

The fourth proportional to 549,719.31, 758,561.31 and 307,950.61 is: 424,943.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,719.31 : 758,561.31 = 307,950.61 : x
  2. Step 2: Convert to fraction form
    549,719.31/758,561.31 = 307,950.61/x
  3. Step 3: Cross multiply
    549,719.31x = 758,561.31 × 307,950.61
  4. Step 4: Simplify right side
    549,719.31x = 233,599,418,136.90
  5. Step 5: Solve for x
    x = 233,599,418,136.90/549,719.31
  6. Step 6: Final answer
    x = 424,943.08

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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.