Home / 402,902.14-556,015.44-221,618.74

Finding the Fourth Proportional to 402,902.14, 556,015.44 and 221,618.74

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Solution

The fourth proportional to 402,902.14, 556,015.44 and 221,618.74 is: 305,839.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,902.14 : 556,015.44 = 221,618.74 : x
  2. Step 2: Convert to fraction form
    402,902.14/556,015.44 = 221,618.74/x
  3. Step 3: Cross multiply
    402,902.14x = 556,015.44 × 221,618.74
  4. Step 4: Simplify right side
    402,902.14x = 123,223,441,233.35
  5. Step 5: Solve for x
    x = 123,223,441,233.35/402,902.14
  6. Step 6: Final answer
    x = 305,839.63

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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.