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Finding the Fourth Proportional to 549,030.94, 758,135.51 and 345,421.22

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Solution

The fourth proportional to 549,030.94, 758,135.51 and 345,421.22 is: 476,978.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,030.94 : 758,135.51 = 345,421.22 : x
  2. Step 2: Convert to fraction form
    549,030.94/758,135.51 = 345,421.22/x
  3. Step 3: Cross multiply
    549,030.94x = 758,135.51 × 345,421.22
  4. Step 4: Simplify right side
    549,030.94x = 261,876,092,789.52
  5. Step 5: Solve for x
    x = 261,876,092,789.52/549,030.94
  6. Step 6: Final answer
    x = 476,978.75

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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.