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Finding the Fourth Proportional to 352,281.20, 528,421.80 and 165,311.60

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Solution

The fourth proportional to 352,281.20, 528,421.80 and 165,311.60 is: 247,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,281.20 : 528,421.80 = 165,311.60 : x
  2. Step 2: Convert to fraction form
    352,281.20/528,421.80 = 165,311.60/x
  3. Step 3: Cross multiply
    352,281.20x = 528,421.80 × 165,311.60
  4. Step 4: Simplify right side
    352,281.20x = 87,354,253,232.88
  5. Step 5: Solve for x
    x = 87,354,253,232.88/352,281.20
  6. Step 6: Final answer
    x = 247,967.40

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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.