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Finding the Fourth Proportional to 868,902.12, 1,303,350.53 and 220,477.05

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Solution

The fourth proportional to 868,902.12, 1,303,350.53 and 220,477.05 is: 330,714.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,902.12 : 1,303,350.53 = 220,477.05 : x
  2. Step 2: Convert to fraction form
    868,902.12/1,303,350.53 = 220,477.05/x
  3. Step 3: Cross multiply
    868,902.12x = 1,303,350.53 × 220,477.05
  4. Step 4: Simplify right side
    868,902.12x = 287,358,878,867.95
  5. Step 5: Solve for x
    x = 287,358,878,867.95/868,902.12
  6. Step 6: Final answer
    x = 330,714.90

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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.