Home / 278,239.13-383,970.03-157,377.81

Finding the Fourth Proportional to 278,239.13, 383,970.03 and 157,377.81

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Solution

The fourth proportional to 278,239.13, 383,970.03 and 157,377.81 is: 217,181.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,239.13 : 383,970.03 = 157,377.81 : x
  2. Step 2: Convert to fraction form
    278,239.13/383,970.03 = 157,377.81/x
  3. Step 3: Cross multiply
    278,239.13x = 383,970.03 × 157,377.81
  4. Step 4: Simplify right side
    278,239.13x = 60,428,362,427.03
  5. Step 5: Solve for x
    x = 60,428,362,427.03/278,239.13
  6. Step 6: Final answer
    x = 217,181.40

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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.