Home / 389,421.18-584,172.78-161,690.94

Finding the Fourth Proportional to 389,421.18, 584,172.78 and 161,690.94

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Solution

The fourth proportional to 389,421.18, 584,172.78 and 161,690.94 is: 242,553.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,421.18 : 584,172.78 = 161,690.94 : x
  2. Step 2: Convert to fraction form
    389,421.18/584,172.78 = 161,690.94/x
  3. Step 3: Cross multiply
    389,421.18x = 584,172.78 × 161,690.94
  4. Step 4: Simplify right side
    389,421.18x = 94,455,445,920.61
  5. Step 5: Solve for x
    x = 94,455,445,920.61/389,421.18
  6. Step 6: Final answer
    x = 242,553.44

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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.