Home / 278,669.66-384,587.85-157,832.45

Finding the Fourth Proportional to 278,669.66, 384,587.85 and 157,832.45

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Solution

The fourth proportional to 278,669.66, 384,587.85 and 157,832.45 is: 217,822.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,669.66 : 384,587.85 = 157,832.45 : x
  2. Step 2: Convert to fraction form
    278,669.66/384,587.85 = 157,832.45/x
  3. Step 3: Cross multiply
    278,669.66x = 384,587.85 × 157,832.45
  4. Step 4: Simplify right side
    278,669.66x = 60,700,440,682.79
  5. Step 5: Solve for x
    x = 60,700,440,682.79/278,669.66
  6. Step 6: Final answer
    x = 217,822.21

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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.