Home / 388,976,396.32-536,781,110.94-212,762,850.32

Finding the Fourth Proportional to 388,976,396.32, 536,781,110.94 and 212,762,850.32

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Solution

The fourth proportional to 388,976,396.32, 536,781,110.94 and 212,762,850.32 is: 293,609,278.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,976,396.32 : 536,781,110.94 = 212,762,850.32 : x
  2. Step 2: Convert to fraction form
    388,976,396.32/536,781,110.94 = 212,762,850.32/x
  3. Step 3: Cross multiply
    388,976,396.32x = 536,781,110.94 × 212,762,850.32
  4. Step 4: Simplify right side
    388,976,396.32x = 114,207,079,161,530,528
  5. Step 5: Solve for x
    x = 114,207,079,161,530,528/388,976,396.32
  6. Step 6: Final answer
    x = 293,609,278.72

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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.