Home / 260,284.20-390,426.30-155,221.80

Finding the Fourth Proportional to 260,284.20, 390,426.30 and 155,221.80

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Solution

The fourth proportional to 260,284.20, 390,426.30 and 155,221.80 is: 232,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,284.20 : 390,426.30 = 155,221.80 : x
  2. Step 2: Convert to fraction form
    260,284.20/390,426.30 = 155,221.80/x
  3. Step 3: Cross multiply
    260,284.20x = 390,426.30 × 155,221.80
  4. Step 4: Simplify right side
    260,284.20x = 60,602,673,053.34
  5. Step 5: Solve for x
    x = 60,602,673,053.34/260,284.20
  6. Step 6: Final answer
    x = 232,832.70

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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.