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Finding the Fourth Proportional to 292,941.20, 439,325.40 and 115,389.20

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Solution

The fourth proportional to 292,941.20, 439,325.40 and 115,389.20 is: 173,049.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,941.20 : 439,325.40 = 115,389.20 : x
  2. Step 2: Convert to fraction form
    292,941.20/439,325.40 = 115,389.20/x
  3. Step 3: Cross multiply
    292,941.20x = 439,325.40 × 115,389.20
  4. Step 4: Simplify right side
    292,941.20x = 50,693,406,445.68
  5. Step 5: Solve for x
    x = 50,693,406,445.68/292,941.20
  6. Step 6: Final answer
    x = 173,049.77

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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.