Home / 388,449,309.72-536,053,706.46-212,233,512.72

Finding the Fourth Proportional to 388,449,309.72, 536,053,706.46 and 212,233,512.72

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Solution

The fourth proportional to 388,449,309.72, 536,053,706.46 and 212,233,512.72 is: 292,878,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,449,309.72 : 536,053,706.46 = 212,233,512.72 : x
  2. Step 2: Convert to fraction form
    388,449,309.72/536,053,706.46 = 212,233,512.72/x
  3. Step 3: Cross multiply
    388,449,309.72x = 536,053,706.46 × 212,233,512.72
  4. Step 4: Simplify right side
    388,449,309.72x = 113,768,561,128,581,552
  5. Step 5: Solve for x
    x = 113,768,561,128,581,552/388,449,309.72
  6. Step 6: Final answer
    x = 292,878,783.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.