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Finding the Fourth Proportional to 395,523.12, 545,671.30 and 292,404.92

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Solution

The fourth proportional to 395,523.12, 545,671.30 and 292,404.92 is: 403,407.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,523.12 : 545,671.30 = 292,404.92 : x
  2. Step 2: Convert to fraction form
    395,523.12/545,671.30 = 292,404.92/x
  3. Step 3: Cross multiply
    395,523.12x = 545,671.30 × 292,404.92
  4. Step 4: Simplify right side
    395,523.12x = 159,556,972,822.80
  5. Step 5: Solve for x
    x = 159,556,972,822.80/395,523.12
  6. Step 6: Final answer
    x = 403,407.45

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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.