Home / 403,185.36-556,430.40-221,933.28

Finding the Fourth Proportional to 403,185.36, 556,430.40 and 221,933.28

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Solution

The fourth proportional to 403,185.36, 556,430.40 and 221,933.28 is: 306,286.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,185.36 : 556,430.40 = 221,933.28 : x
  2. Step 2: Convert to fraction form
    403,185.36/556,430.40 = 221,933.28/x
  3. Step 3: Cross multiply
    403,185.36x = 556,430.40 × 221,933.28
  4. Step 4: Simplify right side
    403,185.36x = 123,490,423,763.71
  5. Step 5: Solve for x
    x = 123,490,423,763.71/403,185.36
  6. Step 6: Final answer
    x = 306,286.97

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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.