Home / 402,945.91-556,066.63-221,671.62

Finding the Fourth Proportional to 402,945.91, 556,066.63 and 221,671.62

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Solution

The fourth proportional to 402,945.91, 556,066.63 and 221,671.62 is: 305,907.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,945.91 : 556,066.63 = 221,671.62 : x
  2. Step 2: Convert to fraction form
    402,945.91/556,066.63 = 221,671.62/x
  3. Step 3: Cross multiply
    402,945.91x = 556,066.63 × 221,671.62
  4. Step 4: Simplify right side
    402,945.91x = 123,264,190,700.04
  5. Step 5: Solve for x
    x = 123,264,190,700.04/402,945.91
  6. Step 6: Final answer
    x = 305,907.54

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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.