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Finding the Fourth Proportional to 260,277.68, 390,491.24 and 108,445.20

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Solution

The fourth proportional to 260,277.68, 390,491.24 and 108,445.20 is: 162,698.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,277.68 : 390,491.24 = 108,445.20 : x
  2. Step 2: Convert to fraction form
    260,277.68/390,491.24 = 108,445.20/x
  3. Step 3: Cross multiply
    260,277.68x = 390,491.24 × 108,445.20
  4. Step 4: Simplify right side
    260,277.68x = 42,346,900,620.05
  5. Step 5: Solve for x
    x = 42,346,900,620.05/260,277.68
  6. Step 6: Final answer
    x = 162,698.93

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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.