Home / 309,215.65-426,528.98-204,439.22

Finding the Fourth Proportional to 309,215.65, 426,528.98 and 204,439.22

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Solution

The fourth proportional to 309,215.65, 426,528.98 and 204,439.22 is: 282,001.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,215.65 : 426,528.98 = 204,439.22 : x
  2. Step 2: Convert to fraction form
    309,215.65/426,528.98 = 204,439.22/x
  3. Step 3: Cross multiply
    309,215.65x = 426,528.98 × 204,439.22
  4. Step 4: Simplify right side
    309,215.65x = 87,199,250,956.40
  5. Step 5: Solve for x
    x = 87,199,250,956.40/309,215.65
  6. Step 6: Final answer
    x = 282,001.42

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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.