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Finding the Fourth Proportional to 307,358, 424,161.54 and 171,390.62

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Solution

The fourth proportional to 307,358, 424,161.54 and 171,390.62 is: 236,523.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,358 : 424,161.54 = 171,390.62 : x
  2. Step 2: Convert to fraction form
    307,358/424,161.54 = 171,390.62/x
  3. Step 3: Cross multiply
    307,358x = 424,161.54 × 171,390.62
  4. Step 4: Simplify right side
    307,358x = 72,697,309,320.75
  5. Step 5: Solve for x
    x = 72,697,309,320.75/307,358
  6. Step 6: Final answer
    x = 236,523.24

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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.