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Finding the Fourth Proportional to 487,977.12, 732,024.72 and 172,369.44

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Solution

The fourth proportional to 487,977.12, 732,024.72 and 172,369.44 is: 258,575.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,977.12 : 732,024.72 = 172,369.44 : x
  2. Step 2: Convert to fraction form
    487,977.12/732,024.72 = 172,369.44/x
  3. Step 3: Cross multiply
    487,977.12x = 732,024.72 × 172,369.44
  4. Step 4: Simplify right side
    487,977.12x = 126,178,691,052.56
  5. Step 5: Solve for x
    x = 126,178,691,052.56/487,977.12
  6. Step 6: Final answer
    x = 258,575.01

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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.