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Finding the Fourth Proportional to 542,641.72, 749,102.72 and 361,655.32

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Solution

The fourth proportional to 542,641.72, 749,102.72 and 361,655.32 is: 499,255.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,641.72 : 749,102.72 = 361,655.32 : x
  2. Step 2: Convert to fraction form
    542,641.72/749,102.72 = 361,655.32/x
  3. Step 3: Cross multiply
    542,641.72x = 749,102.72 × 361,655.32
  4. Step 4: Simplify right side
    542,641.72x = 270,916,983,914.47
  5. Step 5: Solve for x
    x = 270,916,983,914.47/542,641.72
  6. Step 6: Final answer
    x = 499,255.72

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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.