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Finding the Fourth Proportional to 201,900.75, 278,628.80 and 112,482.51

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Solution

The fourth proportional to 201,900.75, 278,628.80 and 112,482.51 is: 155,229.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,900.75 : 278,628.80 = 112,482.51 : x
  2. Step 2: Convert to fraction form
    201,900.75/278,628.80 = 112,482.51/x
  3. Step 3: Cross multiply
    201,900.75x = 278,628.80 × 112,482.51
  4. Step 4: Simplify right side
    201,900.75x = 31,340,866,782.29
  5. Step 5: Solve for x
    x = 31,340,866,782.29/201,900.75
  6. Step 6: Final answer
    x = 155,229.08

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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.