Home / 402,967.23-556,077.21-221,667.66

Finding the Fourth Proportional to 402,967.23, 556,077.21 and 221,667.66

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Solution

The fourth proportional to 402,967.23, 556,077.21 and 221,667.66 is: 305,891.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,967.23 : 556,077.21 = 221,667.66 : x
  2. Step 2: Convert to fraction form
    402,967.23/556,077.21 = 221,667.66/x
  3. Step 3: Cross multiply
    402,967.23x = 556,077.21 × 221,667.66
  4. Step 4: Simplify right side
    402,967.23x = 123,264,333,920.03
  5. Step 5: Solve for x
    x = 123,264,333,920.03/402,967.23
  6. Step 6: Final answer
    x = 305,891.71

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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.