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Finding the Fourth Proportional to 307,374.18, 424,178.22 and 171,416.72

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Solution

The fourth proportional to 307,374.18, 424,178.22 and 171,416.72 is: 236,556.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,374.18 : 424,178.22 = 171,416.72 : x
  2. Step 2: Convert to fraction form
    307,374.18/424,178.22 = 171,416.72/x
  3. Step 3: Cross multiply
    307,374.18x = 424,178.22 × 171,416.72
  4. Step 4: Simplify right side
    307,374.18x = 72,711,237,046.95
  5. Step 5: Solve for x
    x = 72,711,237,046.95/307,374.18
  6. Step 6: Final answer
    x = 236,556.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.