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Finding the Fourth Proportional to 207,616.57, 311,424.80 and 118,807.30

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Solution

The fourth proportional to 207,616.57, 311,424.80 and 118,807.30 is: 178,210.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,616.57 : 311,424.80 = 118,807.30 : x
  2. Step 2: Convert to fraction form
    207,616.57/311,424.80 = 118,807.30/x
  3. Step 3: Cross multiply
    207,616.57x = 311,424.80 × 118,807.30
  4. Step 4: Simplify right side
    207,616.57x = 36,999,538,083.92
  5. Step 5: Solve for x
    x = 36,999,538,083.92/207,616.57
  6. Step 6: Final answer
    x = 178,210.91

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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.