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Finding the Fourth Proportional to 228,678.75, 343,051.33 and 70,919.91

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Solution

The fourth proportional to 228,678.75, 343,051.33 and 70,919.91 is: 106,390.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,678.75 : 343,051.33 = 70,919.91 : x
  2. Step 2: Convert to fraction form
    228,678.75/343,051.33 = 70,919.91/x
  3. Step 3: Cross multiply
    228,678.75x = 343,051.33 × 70,919.91
  4. Step 4: Simplify right side
    228,678.75x = 24,329,169,448.98
  5. Step 5: Solve for x
    x = 24,329,169,448.98/228,678.75
  6. Step 6: Final answer
    x = 106,390.16

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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.