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Finding the Fourth Proportional to 228,778.40, 343,221.59 and 79,019.93

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Solution

The fourth proportional to 228,778.40, 343,221.59 and 79,019.93 is: 118,548.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,778.40 : 343,221.59 = 79,019.93 : x
  2. Step 2: Convert to fraction form
    228,778.40/343,221.59 = 79,019.93/x
  3. Step 3: Cross multiply
    228,778.40x = 343,221.59 × 79,019.93
  4. Step 4: Simplify right side
    228,778.40x = 27,121,347,071.89
  5. Step 5: Solve for x
    x = 27,121,347,071.89/228,778.40
  6. Step 6: Final answer
    x = 118,548.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.