Home / 440,073,007.20-660,109,510.80-221,638,946.40

Finding the Fourth Proportional to 440,073,007.20, 660,109,510.80 and 221,638,946.40

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Solution

The fourth proportional to 440,073,007.20, 660,109,510.80 and 221,638,946.40 is: 332,458,419.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,073,007.20 : 660,109,510.80 = 221,638,946.40 : x
  2. Step 2: Convert to fraction form
    440,073,007.20/660,109,510.80 = 221,638,946.40/x
  3. Step 3: Cross multiply
    440,073,007.20x = 660,109,510.80 × 221,638,946.40
  4. Step 4: Simplify right side
    440,073,007.20x = 146,305,976,482,331,424
  5. Step 5: Solve for x
    x = 146,305,976,482,331,424/440,073,007.20
  6. Step 6: Final answer
    x = 332,458,419.60

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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.