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Finding the Fourth Proportional to 218,153.80, 301,047.06 and 142,700.68

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Solution

The fourth proportional to 218,153.80, 301,047.06 and 142,700.68 is: 196,923.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,153.80 : 301,047.06 = 142,700.68 : x
  2. Step 2: Convert to fraction form
    218,153.80/301,047.06 = 142,700.68/x
  3. Step 3: Cross multiply
    218,153.80x = 301,047.06 × 142,700.68
  4. Step 4: Simplify right side
    218,153.80x = 42,959,620,174.00
  5. Step 5: Solve for x
    x = 42,959,620,174.00/218,153.80
  6. Step 6: Final answer
    x = 196,923.55

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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.