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Finding the Fourth Proportional to 255,717.90, 383,706.41 and 170,387.08

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Solution

The fourth proportional to 255,717.90, 383,706.41 and 170,387.08 is: 255,666.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,717.90 : 383,706.41 = 170,387.08 : x
  2. Step 2: Convert to fraction form
    255,717.90/383,706.41 = 170,387.08/x
  3. Step 3: Cross multiply
    255,717.90x = 383,706.41 × 170,387.08
  4. Step 4: Simplify right side
    255,717.90x = 65,378,614,777.18
  5. Step 5: Solve for x
    x = 65,378,614,777.18/255,717.90
  6. Step 6: Final answer
    x = 255,666.95

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1.5x scale

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.