Home / 401,960.16-554,711.52-220,688.80

Finding the Fourth Proportional to 401,960.16, 554,711.52 and 220,688.80

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Solution

The fourth proportional to 401,960.16, 554,711.52 and 220,688.80 is: 304,554.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,960.16 : 554,711.52 = 220,688.80 : x
  2. Step 2: Convert to fraction form
    401,960.16/554,711.52 = 220,688.80/x
  3. Step 3: Cross multiply
    401,960.16x = 554,711.52 × 220,688.80
  4. Step 4: Simplify right side
    401,960.16x = 122,418,619,694.98
  5. Step 5: Solve for x
    x = 122,418,619,694.98/401,960.16
  6. Step 6: Final answer
    x = 304,554.11

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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.