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Finding the Fourth Proportional to 307,376.61, 424,181.54 and 171,419.15

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Solution

The fourth proportional to 307,376.61, 424,181.54 and 171,419.15 is: 236,559.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,376.61 : 424,181.54 = 171,419.15 : x
  2. Step 2: Convert to fraction form
    307,376.61/424,181.54 = 171,419.15/x
  3. Step 3: Cross multiply
    307,376.61x = 424,181.54 × 171,419.15
  4. Step 4: Simplify right side
    307,376.61x = 72,712,837,340.13
  5. Step 5: Solve for x
    x = 72,712,837,340.13/307,376.61
  6. Step 6: Final answer
    x = 236,559.44

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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.