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Finding the Fourth Proportional to 371,821, 557,631.76 and 161,408.92

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Solution

The fourth proportional to 371,821, 557,631.76 and 161,408.92 is: 242,070.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,821 : 557,631.76 = 161,408.92 : x
  2. Step 2: Convert to fraction form
    371,821/557,631.76 = 161,408.92/x
  3. Step 3: Cross multiply
    371,821x = 557,631.76 × 161,408.92
  4. Step 4: Simplify right side
    371,821x = 90,006,740,139.30
  5. Step 5: Solve for x
    x = 90,006,740,139.30/371,821
  6. Step 6: Final answer
    x = 242,070.08

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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.