Home / 278,490.42-384,335.73-157,631.22

Finding the Fourth Proportional to 278,490.42, 384,335.73 and 157,631.22

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Solution

The fourth proportional to 278,490.42, 384,335.73 and 157,631.22 is: 217,541.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,490.42 : 384,335.73 = 157,631.22 : x
  2. Step 2: Convert to fraction form
    278,490.42/384,335.73 = 157,631.22/x
  3. Step 3: Cross multiply
    278,490.42x = 384,335.73 × 157,631.22
  4. Step 4: Simplify right side
    278,490.42x = 60,583,310,009.49
  5. Step 5: Solve for x
    x = 60,583,310,009.49/278,490.42
  6. Step 6: Final answer
    x = 217,541.81

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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.