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Finding the Fourth Proportional to 307,042.90, 423,702.30 and 169,194.68

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Solution

The fourth proportional to 307,042.90, 423,702.30 and 169,194.68 is: 233,479.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,042.90 : 423,702.30 = 169,194.68 : x
  2. Step 2: Convert to fraction form
    307,042.90/423,702.30 = 169,194.68/x
  3. Step 3: Cross multiply
    307,042.90x = 423,702.30 × 169,194.68
  4. Step 4: Simplify right side
    307,042.90x = 71,688,175,063.76
  5. Step 5: Solve for x
    x = 71,688,175,063.76/307,042.90
  6. Step 6: Final answer
    x = 233,479.34

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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.