Home / 403,013.68-556,158.90-221,721.73

Finding the Fourth Proportional to 403,013.68, 556,158.90 and 221,721.73

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Solution

The fourth proportional to 403,013.68, 556,158.90 and 221,721.73 is: 305,976.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,013.68 : 556,158.90 = 221,721.73 : x
  2. Step 2: Convert to fraction form
    403,013.68/556,158.90 = 221,721.73/x
  3. Step 3: Cross multiply
    403,013.68x = 556,158.90 × 221,721.73
  4. Step 4: Simplify right side
    403,013.68x = 123,312,513,462.90
  5. Step 5: Solve for x
    x = 123,312,513,462.90/403,013.68
  6. Step 6: Final answer
    x = 305,976.00

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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.