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Finding the Fourth Proportional to 230,641.60, 346,048.80 and 90,500.80

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Solution

The fourth proportional to 230,641.60, 346,048.80 and 90,500.80 is: 135,785.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,641.60 : 346,048.80 = 90,500.80 : x
  2. Step 2: Convert to fraction form
    230,641.60/346,048.80 = 90,500.80/x
  3. Step 3: Cross multiply
    230,641.60x = 346,048.80 × 90,500.80
  4. Step 4: Simplify right side
    230,641.60x = 31,317,693,239.04
  5. Step 5: Solve for x
    x = 31,317,693,239.04/230,641.60
  6. Step 6: Final answer
    x = 135,785.10

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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.