Home / 440,025,339.20-660,038,008.80-221,591,278.40

Finding the Fourth Proportional to 440,025,339.20, 660,038,008.80 and 221,591,278.40

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Solution

The fourth proportional to 440,025,339.20, 660,038,008.80 and 221,591,278.40 is: 332,386,917.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,025,339.20 : 660,038,008.80 = 221,591,278.40 : x
  2. Step 2: Convert to fraction form
    440,025,339.20/660,038,008.80 = 221,591,278.40/x
  3. Step 3: Cross multiply
    440,025,339.20x = 660,038,008.80 × 221,591,278.40
  4. Step 4: Simplify right side
    440,025,339.20x = 146,258,666,162,582,432
  5. Step 5: Solve for x
    x = 146,258,666,162,582,432/440,025,339.20
  6. Step 6: Final answer
    x = 332,386,917.60

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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.