Home / 282,266.78-390,088.10-231,198.64

Finding the Fourth Proportional to 282,266.78, 390,088.10 and 231,198.64

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Solution

The fourth proportional to 282,266.78, 390,088.10 and 231,198.64 is: 319,512.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,266.78 : 390,088.10 = 231,198.64 : x
  2. Step 2: Convert to fraction form
    282,266.78/390,088.10 = 231,198.64/x
  3. Step 3: Cross multiply
    282,266.78x = 390,088.10 × 231,198.64
  4. Step 4: Simplify right side
    282,266.78x = 90,187,837,802.96
  5. Step 5: Solve for x
    x = 90,187,837,802.96/282,266.78
  6. Step 6: Final answer
    x = 319,512.77

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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.