Home / 390,727.72-585,661.02-255,629.44

Finding the Fourth Proportional to 390,727.72, 585,661.02 and 255,629.44

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Solution

The fourth proportional to 390,727.72, 585,661.02 and 255,629.44 is: 383,162.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,727.72 : 585,661.02 = 255,629.44 : x
  2. Step 2: Convert to fraction form
    390,727.72/585,661.02 = 255,629.44/x
  3. Step 3: Cross multiply
    390,727.72x = 585,661.02 × 255,629.44
  4. Step 4: Simplify right side
    390,727.72x = 149,712,198,572.43
  5. Step 5: Solve for x
    x = 149,712,198,572.43/390,727.72
  6. Step 6: Final answer
    x = 383,162.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.