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Finding the Fourth Proportional to 230,545.44, 345,848.40 and 90,285.84

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Solution

The fourth proportional to 230,545.44, 345,848.40 and 90,285.84 is: 135,440.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,545.44 : 345,848.40 = 90,285.84 : x
  2. Step 2: Convert to fraction form
    230,545.44/345,848.40 = 90,285.84/x
  3. Step 3: Cross multiply
    230,545.44x = 345,848.40 × 90,285.84
  4. Step 4: Simplify right side
    230,545.44x = 31,225,213,306.66
  5. Step 5: Solve for x
    x = 31,225,213,306.66/230,545.44
  6. Step 6: Final answer
    x = 135,440.60

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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.