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Finding the Fourth Proportional to 280,661.61, 387,203.10 and 173,044.82

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Solution

The fourth proportional to 280,661.61, 387,203.10 and 173,044.82 is: 238,734.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,661.61 : 387,203.10 = 173,044.82 : x
  2. Step 2: Convert to fraction form
    280,661.61/387,203.10 = 173,044.82/x
  3. Step 3: Cross multiply
    280,661.61x = 387,203.10 × 173,044.82
  4. Step 4: Simplify right side
    280,661.61x = 67,003,488,806.93
  5. Step 5: Solve for x
    x = 67,003,488,806.93/280,661.61
  6. Step 6: Final answer
    x = 238,734.07

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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.