Home / 285,065.28-393,068.16-213,215.04

Finding the Fourth Proportional to 285,065.28, 393,068.16 and 213,215.04

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Solution

The fourth proportional to 285,065.28, 393,068.16 and 213,215.04 is: 293,995.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,065.28 : 393,068.16 = 213,215.04 : x
  2. Step 2: Convert to fraction form
    285,065.28/393,068.16 = 213,215.04/x
  3. Step 3: Cross multiply
    285,065.28x = 393,068.16 × 213,215.04
  4. Step 4: Simplify right side
    285,065.28x = 83,808,043,457.13
  5. Step 5: Solve for x
    x = 83,808,043,457.13/285,065.28
  6. Step 6: Final answer
    x = 293,995.97

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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.