Home / 389,287.20-583,930.80-222,938.40

Finding the Fourth Proportional to 389,287.20, 583,930.80 and 222,938.40

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Solution

The fourth proportional to 389,287.20, 583,930.80 and 222,938.40 is: 334,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,287.20 : 583,930.80 = 222,938.40 : x
  2. Step 2: Convert to fraction form
    389,287.20/583,930.80 = 222,938.40/x
  3. Step 3: Cross multiply
    389,287.20x = 583,930.80 × 222,938.40
  4. Step 4: Simplify right side
    389,287.20x = 130,180,598,262.72
  5. Step 5: Solve for x
    x = 130,180,598,262.72/389,287.20
  6. Step 6: Final answer
    x = 334,407.60

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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.