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Finding the Fourth Proportional to 549,013.80, 757,603.86 and 307,255.56

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Solution

The fourth proportional to 549,013.80, 757,603.86 and 307,255.56 is: 423,992.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,013.80 : 757,603.86 = 307,255.56 : x
  2. Step 2: Convert to fraction form
    549,013.80/757,603.86 = 307,255.56/x
  3. Step 3: Cross multiply
    549,013.80x = 757,603.86 × 307,255.56
  4. Step 4: Simplify right side
    549,013.80x = 232,777,998,262.46
  5. Step 5: Solve for x
    x = 232,777,998,262.46/549,013.80
  6. Step 6: Final answer
    x = 423,992.98

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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.