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Finding the Fourth Proportional to 260,032.60, 390,048.90 and 218,042.20

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Solution

The fourth proportional to 260,032.60, 390,048.90 and 218,042.20 is: 327,063.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,032.60 : 390,048.90 = 218,042.20 : x
  2. Step 2: Convert to fraction form
    260,032.60/390,048.90 = 218,042.20/x
  3. Step 3: Cross multiply
    260,032.60x = 390,048.90 × 218,042.20
  4. Step 4: Simplify right side
    260,032.60x = 85,047,120,263.58
  5. Step 5: Solve for x
    x = 85,047,120,263.58/260,032.60
  6. Step 6: Final answer
    x = 327,063.30

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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.