Home / 403,143.32-556,337.87-221,855.25

Finding the Fourth Proportional to 403,143.32, 556,337.87 and 221,855.25

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Solution

The fourth proportional to 403,143.32, 556,337.87 and 221,855.25 is: 306,160.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,143.32 : 556,337.87 = 221,855.25 : x
  2. Step 2: Convert to fraction form
    403,143.32/556,337.87 = 221,855.25/x
  3. Step 3: Cross multiply
    403,143.32x = 556,337.87 × 221,855.25
  4. Step 4: Simplify right side
    403,143.32x = 123,426,476,124.04
  5. Step 5: Solve for x
    x = 123,426,476,124.04/403,143.32
  6. Step 6: Final answer
    x = 306,160.29

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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.