Home / 218,857.68-302,080.95-142,586.10

Finding the Fourth Proportional to 218,857.68, 302,080.95 and 142,586.10

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Solution

The fourth proportional to 218,857.68, 302,080.95 and 142,586.10 is: 196,806.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,857.68 : 302,080.95 = 142,586.10 : x
  2. Step 2: Convert to fraction form
    218,857.68/302,080.95 = 142,586.10/x
  3. Step 3: Cross multiply
    218,857.68x = 302,080.95 × 142,586.10
  4. Step 4: Simplify right side
    218,857.68x = 43,072,544,544.80
  5. Step 5: Solve for x
    x = 43,072,544,544.80/218,857.68
  6. Step 6: Final answer
    x = 196,806.18

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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.