Home / 384,149.18-530,155.24-212,100.32

Finding the Fourth Proportional to 384,149.18, 530,155.24 and 212,100.32

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Solution

The fourth proportional to 384,149.18, 530,155.24 and 212,100.32 is: 292,714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,149.18 : 530,155.24 = 212,100.32 : x
  2. Step 2: Convert to fraction form
    384,149.18/530,155.24 = 212,100.32/x
  3. Step 3: Cross multiply
    384,149.18x = 530,155.24 × 212,100.32
  4. Step 4: Simplify right side
    384,149.18x = 112,446,092,872.65
  5. Step 5: Solve for x
    x = 112,446,092,872.65/384,149.18
  6. Step 6: Final answer
    x = 292,714.65

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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.