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Finding the Fourth Proportional to 302,451.70, 417,423.10 and 173,440.66

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Solution

The fourth proportional to 302,451.70, 417,423.10 and 173,440.66 is: 239,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,451.70 : 417,423.10 = 173,440.66 : x
  2. Step 2: Convert to fraction form
    302,451.70/417,423.10 = 173,440.66/x
  3. Step 3: Cross multiply
    302,451.70x = 417,423.10 × 173,440.66
  4. Step 4: Simplify right side
    302,451.70x = 72,398,137,963.25
  5. Step 5: Solve for x
    x = 72,398,137,963.25/302,451.70
  6. Step 6: Final answer
    x = 239,370.91

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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.