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Finding the Fourth Proportional to 230,612.10, 345,769.08 and 90,384.90

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Solution

The fourth proportional to 230,612.10, 345,769.08 and 90,384.90 is: 135,518.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,612.10 : 345,769.08 = 90,384.90 : x
  2. Step 2: Convert to fraction form
    230,612.10/345,769.08 = 90,384.90/x
  3. Step 3: Cross multiply
    230,612.10x = 345,769.08 × 90,384.90
  4. Step 4: Simplify right side
    230,612.10x = 31,252,303,718.89
  5. Step 5: Solve for x
    x = 31,252,303,718.89/230,612.10
  6. Step 6: Final answer
    x = 135,518.92

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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.