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Finding the Fourth Proportional to 230,479.98, 345,690.81 and 90,337.02

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Solution

The fourth proportional to 230,479.98, 345,690.81 and 90,337.02 is: 135,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,479.98 : 345,690.81 = 90,337.02 : x
  2. Step 2: Convert to fraction form
    230,479.98/345,690.81 = 90,337.02/x
  3. Step 3: Cross multiply
    230,479.98x = 345,690.81 × 90,337.02
  4. Step 4: Simplify right side
    230,479.98x = 31,228,677,616.79
  5. Step 5: Solve for x
    x = 31,228,677,616.79/230,479.98
  6. Step 6: Final answer
    x = 135,494.10

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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.