Home / 279,479.71-384,827.79-210,669.13

Finding the Fourth Proportional to 279,479.71, 384,827.79 and 210,669.13

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Solution

The fourth proportional to 279,479.71, 384,827.79 and 210,669.13 is: 290,079.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,479.71 : 384,827.79 = 210,669.13 : x
  2. Step 2: Convert to fraction form
    279,479.71/384,827.79 = 210,669.13/x
  3. Step 3: Cross multiply
    279,479.71x = 384,827.79 × 210,669.13
  4. Step 4: Simplify right side
    279,479.71x = 81,071,335,719.12
  5. Step 5: Solve for x
    x = 81,071,335,719.12/279,479.71
  6. Step 6: Final answer
    x = 290,079.50

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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.