Home / 280,902,862.80-421,427,777.40-108,385,304.40

Finding the Fourth Proportional to 280,902,862.80, 421,427,777.40 and 108,385,304.40

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Solution

The fourth proportional to 280,902,862.80, 421,427,777.40 and 108,385,304.40 is: 162,606,309.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,902,862.80 : 421,427,777.40 = 108,385,304.40 : x
  2. Step 2: Convert to fraction form
    280,902,862.80/421,427,777.40 = 108,385,304.40/x
  3. Step 3: Cross multiply
    280,902,862.80x = 421,427,777.40 × 108,385,304.40
  4. Step 4: Simplify right side
    280,902,862.80x = 45,676,577,936,114,440
  5. Step 5: Solve for x
    x = 45,676,577,936,114,440/280,902,862.80
  6. Step 6: Final answer
    x = 162,606,309.81

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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.