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Finding the Fourth Proportional to 218,313.65, 301,251.41 and 122,818.30

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Solution

The fourth proportional to 218,313.65, 301,251.41 and 122,818.30 is: 169,477.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,313.65 : 301,251.41 = 122,818.30 : x
  2. Step 2: Convert to fraction form
    218,313.65/301,251.41 = 122,818.30/x
  3. Step 3: Cross multiply
    218,313.65x = 301,251.41 × 122,818.30
  4. Step 4: Simplify right side
    218,313.65x = 36,999,186,048.80
  5. Step 5: Solve for x
    x = 36,999,186,048.80/218,313.65
  6. Step 6: Final answer
    x = 169,477.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.