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Finding the Fourth Proportional to 230,858.70, 346,288.05 and 90,545.10

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Solution

The fourth proportional to 230,858.70, 346,288.05 and 90,545.10 is: 135,817.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,858.70 : 346,288.05 = 90,545.10 : x
  2. Step 2: Convert to fraction form
    230,858.70/346,288.05 = 90,545.10/x
  3. Step 3: Cross multiply
    230,858.70x = 346,288.05 × 90,545.10
  4. Step 4: Simplify right side
    230,858.70x = 31,354,686,116.06
  5. Step 5: Solve for x
    x = 31,354,686,116.06/230,858.70
  6. Step 6: Final answer
    x = 135,817.65

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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.