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Finding the Fourth Proportional to 307,168.48, 423,894.59 and 171,211.17

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Solution

The fourth proportional to 307,168.48, 423,894.59 and 171,211.17 is: 236,272.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,168.48 : 423,894.59 = 171,211.17 : x
  2. Step 2: Convert to fraction form
    307,168.48/423,894.59 = 171,211.17/x
  3. Step 3: Cross multiply
    307,168.48x = 423,894.59 × 171,211.17
  4. Step 4: Simplify right side
    307,168.48x = 72,575,488,710.57
  5. Step 5: Solve for x
    x = 72,575,488,710.57/307,168.48
  6. Step 6: Final answer
    x = 236,272.58

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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.