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Finding the Fourth Proportional to 330,415.60, 495,234.60 and 172,562.80

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Solution

The fourth proportional to 330,415.60, 495,234.60 and 172,562.80 is: 258,641.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,415.60 : 495,234.60 = 172,562.80 : x
  2. Step 2: Convert to fraction form
    330,415.60/495,234.60 = 172,562.80/x
  3. Step 3: Cross multiply
    330,415.60x = 495,234.60 × 172,562.80
  4. Step 4: Simplify right side
    330,415.60x = 85,459,069,232.88
  5. Step 5: Solve for x
    x = 85,459,069,232.88/330,415.60
  6. Step 6: Final answer
    x = 258,641.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.