Home / 402,979.65-556,089.98-221,662.32

Finding the Fourth Proportional to 402,979.65, 556,089.98 and 221,662.32

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Solution

The fourth proportional to 402,979.65, 556,089.98 and 221,662.32 is: 305,881.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,979.65 : 556,089.98 = 221,662.32 : x
  2. Step 2: Convert to fraction form
    402,979.65/556,089.98 = 221,662.32/x
  3. Step 3: Cross multiply
    402,979.65x = 556,089.98 × 221,662.32
  4. Step 4: Simplify right side
    402,979.65x = 123,264,193,987.24
  5. Step 5: Solve for x
    x = 123,264,193,987.24/402,979.65
  6. Step 6: Final answer
    x = 305,881.93

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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.