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Finding the Fourth Proportional to 230,870.80, 346,234.20 and 90,672.40

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Solution

The fourth proportional to 230,870.80, 346,234.20 and 90,672.40 is: 135,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,870.80 : 346,234.20 = 90,672.40 : x
  2. Step 2: Convert to fraction form
    230,870.80/346,234.20 = 90,672.40/x
  3. Step 3: Cross multiply
    230,870.80x = 346,234.20 × 90,672.40
  4. Step 4: Simplify right side
    230,870.80x = 31,393,885,876.08
  5. Step 5: Solve for x
    x = 31,393,885,876.08/230,870.80
  6. Step 6: Final answer
    x = 135,980.32

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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.