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Finding the Fourth Proportional to 201,972.66, 278,724.22 and 111,332.12

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Solution

The fourth proportional to 201,972.66, 278,724.22 and 111,332.12 is: 153,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,972.66 : 278,724.22 = 111,332.12 : x
  2. Step 2: Convert to fraction form
    201,972.66/278,724.22 = 111,332.12/x
  3. Step 3: Cross multiply
    201,972.66x = 278,724.22 × 111,332.12
  4. Step 4: Simplify right side
    201,972.66x = 31,030,958,307.95
  5. Step 5: Solve for x
    x = 31,030,958,307.95/201,972.66
  6. Step 6: Final answer
    x = 153,639.40

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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.