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Finding the Fourth Proportional to 387,728.72, 535,093.80 and 236,854.16

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Solution

The fourth proportional to 387,728.72, 535,093.80 and 236,854.16 is: 326,875.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,728.72 : 535,093.80 = 236,854.16 : x
  2. Step 2: Convert to fraction form
    387,728.72/535,093.80 = 236,854.16/x
  3. Step 3: Cross multiply
    387,728.72x = 535,093.80 × 236,854.16
  4. Step 4: Simplify right side
    387,728.72x = 126,739,192,520.21
  5. Step 5: Solve for x
    x = 126,739,192,520.21/387,728.72
  6. Step 6: Final answer
    x = 326,875.95

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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.