Home / 388,976,394.32-536,781,108.18-212,762,848.32

Finding the Fourth Proportional to 388,976,394.32, 536,781,108.18 and 212,762,848.32

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Solution

The fourth proportional to 388,976,394.32, 536,781,108.18 and 212,762,848.32 is: 293,609,275.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,976,394.32 : 536,781,108.18 = 212,762,848.32 : x
  2. Step 2: Convert to fraction form
    388,976,394.32/536,781,108.18 = 212,762,848.32/x
  3. Step 3: Cross multiply
    388,976,394.32x = 536,781,108.18 × 212,762,848.32
  4. Step 4: Simplify right side
    388,976,394.32x = 114,207,077,500,742,848
  5. Step 5: Solve for x
    x = 114,207,077,500,742,848/388,976,394.32
  6. Step 6: Final answer
    x = 293,609,275.96

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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.