Home / 279,565.12-385,816.08-210,531

Finding the Fourth Proportional to 279,565.12, 385,816.08 and 210,531

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Solution

The fourth proportional to 279,565.12, 385,816.08 and 210,531 is: 290,544.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,565.12 : 385,816.08 = 210,531 : x
  2. Step 2: Convert to fraction form
    279,565.12/385,816.08 = 210,531/x
  3. Step 3: Cross multiply
    279,565.12x = 385,816.08 × 210,531
  4. Step 4: Simplify right side
    279,565.12x = 81,226,245,138.48
  5. Step 5: Solve for x
    x = 81,226,245,138.48/279,565.12
  6. Step 6: Final answer
    x = 290,544.99

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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.