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Finding the Fourth Proportional to 279,746.42, 386,050.91 and 158,888.70

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Solution

The fourth proportional to 279,746.42, 386,050.91 and 158,888.70 is: 219,266.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,746.42 : 386,050.91 = 158,888.70 : x
  2. Step 2: Convert to fraction form
    279,746.42/386,050.91 = 158,888.70/x
  3. Step 3: Cross multiply
    279,746.42x = 386,050.91 × 158,888.70
  4. Step 4: Simplify right side
    279,746.42x = 61,339,126,429.27
  5. Step 5: Solve for x
    x = 61,339,126,429.27/279,746.42
  6. Step 6: Final answer
    x = 219,266.89

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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.