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Finding the Fourth Proportional to 279,450.72, 385,695.13 and 158,603.32

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Solution

The fourth proportional to 279,450.72, 385,695.13 and 158,603.32 is: 218,902.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,450.72 : 385,695.13 = 158,603.32 : x
  2. Step 2: Convert to fraction form
    279,450.72/385,695.13 = 158,603.32/x
  3. Step 3: Cross multiply
    279,450.72x = 385,695.13 × 158,603.32
  4. Step 4: Simplify right side
    279,450.72x = 61,172,528,125.83
  5. Step 5: Solve for x
    x = 61,172,528,125.83/279,450.72
  6. Step 6: Final answer
    x = 218,902.74

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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.