Home / 403,011.43-556,155.80-221,719.48

Finding the Fourth Proportional to 403,011.43, 556,155.80 and 221,719.48

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Solution

The fourth proportional to 403,011.43, 556,155.80 and 221,719.48 is: 305,972.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,011.43 : 556,155.80 = 221,719.48 : x
  2. Step 2: Convert to fraction form
    403,011.43/556,155.80 = 221,719.48/x
  3. Step 3: Cross multiply
    403,011.43x = 556,155.80 × 221,719.48
  4. Step 4: Simplify right side
    403,011.43x = 123,310,574,774.98
  5. Step 5: Solve for x
    x = 123,310,574,774.98/403,011.43
  6. Step 6: Final answer
    x = 305,972.90

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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.