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Finding the Fourth Proportional to 212,219.67, 292,868.69 and 116,728.87

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Solution

The fourth proportional to 212,219.67, 292,868.69 and 116,728.87 is: 161,088.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,219.67 : 292,868.69 = 116,728.87 : x
  2. Step 2: Convert to fraction form
    212,219.67/292,868.69 = 116,728.87/x
  3. Step 3: Cross multiply
    212,219.67x = 292,868.69 × 116,728.87
  4. Step 4: Simplify right side
    212,219.67x = 34,186,231,242.08
  5. Step 5: Solve for x
    x = 34,186,231,242.08/212,219.67
  6. Step 6: Final answer
    x = 161,088.89

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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.