Home / 403,258.74-556,499.07-221,988.90

Finding the Fourth Proportional to 403,258.74, 556,499.07 and 221,988.90

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Solution

The fourth proportional to 403,258.74, 556,499.07 and 221,988.90 is: 306,345.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,258.74 : 556,499.07 = 221,988.90 : x
  2. Step 2: Convert to fraction form
    403,258.74/556,499.07 = 221,988.90/x
  3. Step 3: Cross multiply
    403,258.74x = 556,499.07 × 221,988.90
  4. Step 4: Simplify right side
    403,258.74x = 123,536,616,400.32
  5. Step 5: Solve for x
    x = 123,536,616,400.32/403,258.74
  6. Step 6: Final answer
    x = 306,345.79

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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.