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Finding the Fourth Proportional to 315,064.48, 434,771.65 and 179,079.52

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Solution

The fourth proportional to 315,064.48, 434,771.65 and 179,079.52 is: 247,119.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,064.48 : 434,771.65 = 179,079.52 : x
  2. Step 2: Convert to fraction form
    315,064.48/434,771.65 = 179,079.52/x
  3. Step 3: Cross multiply
    315,064.48x = 434,771.65 × 179,079.52
  4. Step 4: Simplify right side
    315,064.48x = 77,858,698,391.61
  5. Step 5: Solve for x
    x = 77,858,698,391.61/315,064.48
  6. Step 6: Final answer
    x = 247,119.89

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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.