Home / 261,399.24-390,328.28-207,486.36

Finding the Fourth Proportional to 261,399.24, 390,328.28 and 207,486.36

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Solution

The fourth proportional to 261,399.24, 390,328.28 and 207,486.36 is: 309,824.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,399.24 : 390,328.28 = 207,486.36 : x
  2. Step 2: Convert to fraction form
    261,399.24/390,328.28 = 207,486.36/x
  3. Step 3: Cross multiply
    261,399.24x = 390,328.28 × 207,486.36
  4. Step 4: Simplify right side
    261,399.24x = 80,987,794,022.26
  5. Step 5: Solve for x
    x = 80,987,794,022.26/261,399.24
  6. Step 6: Final answer
    x = 309,824.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.