Home / 403,011.75-556,156.20-221,719.79

Finding the Fourth Proportional to 403,011.75, 556,156.20 and 221,719.79

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Solution

The fourth proportional to 403,011.75, 556,156.20 and 221,719.79 is: 305,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,011.75 : 556,156.20 = 221,719.79 : x
  2. Step 2: Convert to fraction form
    403,011.75/556,156.20 = 221,719.79/x
  3. Step 3: Cross multiply
    403,011.75x = 556,156.20 × 221,719.79
  4. Step 4: Simplify right side
    403,011.75x = 123,310,834,344.55
  5. Step 5: Solve for x
    x = 123,310,834,344.55/403,011.75
  6. Step 6: Final answer
    x = 305,973.30

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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.