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Finding the Fourth Proportional to 547,671.72, 819,509.28 and 323,139.72

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Solution

The fourth proportional to 547,671.72, 819,509.28 and 323,139.72 is: 483,530.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,671.72 : 819,509.28 = 323,139.72 : x
  2. Step 2: Convert to fraction form
    547,671.72/819,509.28 = 323,139.72/x
  3. Step 3: Cross multiply
    547,671.72x = 819,509.28 × 323,139.72
  4. Step 4: Simplify right side
    547,671.72x = 264,815,999,276.60
  5. Step 5: Solve for x
    x = 264,815,999,276.60/547,671.72
  6. Step 6: Final answer
    x = 483,530.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.