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Finding the Fourth Proportional to 255,675.17, 383,512.55 and 68,686.67

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Solution

The fourth proportional to 255,675.17, 383,512.55 and 68,686.67 is: 103,029.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,675.17 : 383,512.55 = 68,686.67 : x
  2. Step 2: Convert to fraction form
    255,675.17/383,512.55 = 68,686.67/x
  3. Step 3: Cross multiply
    255,675.17x = 383,512.55 × 68,686.67
  4. Step 4: Simplify right side
    255,675.17x = 26,342,197,701.71
  5. Step 5: Solve for x
    x = 26,342,197,701.71/255,675.17
  6. Step 6: Final answer
    x = 103,029.94

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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.