Home / 242,763,138.40-364,144,707.60-220,655,192.80

Finding the Fourth Proportional to 242,763,138.40, 364,144,707.60 and 220,655,192.80

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Solution

The fourth proportional to 242,763,138.40, 364,144,707.60 and 220,655,192.80 is: 330,982,789.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,763,138.40 : 364,144,707.60 = 220,655,192.80 : x
  2. Step 2: Convert to fraction form
    242,763,138.40/364,144,707.60 = 220,655,192.80/x
  3. Step 3: Cross multiply
    242,763,138.40x = 364,144,707.60 × 220,655,192.80
  4. Step 4: Simplify right side
    242,763,138.40x = 80,350,420,662,577,632
  5. Step 5: Solve for x
    x = 80,350,420,662,577,632/242,763,138.40
  6. Step 6: Final answer
    x = 330,982,789.20

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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.