Home / 403,011.18-556,155.45-221,719.23

Finding the Fourth Proportional to 403,011.18, 556,155.45 and 221,719.23

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Solution

The fourth proportional to 403,011.18, 556,155.45 and 221,719.23 is: 305,972.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,011.18 : 556,155.45 = 221,719.23 : x
  2. Step 2: Convert to fraction form
    403,011.18/556,155.45 = 221,719.23/x
  3. Step 3: Cross multiply
    403,011.18x = 556,155.45 × 221,719.23
  4. Step 4: Simplify right side
    403,011.18x = 123,310,358,134.30
  5. Step 5: Solve for x
    x = 123,310,358,134.30/403,011.18
  6. Step 6: Final answer
    x = 305,972.55

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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.