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Finding the Fourth Proportional to 255,423.17, 383,134.86 and 105,498.70

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Solution

The fourth proportional to 255,423.17, 383,134.86 and 105,498.70 is: 158,248.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,423.17 : 383,134.86 = 105,498.70 : x
  2. Step 2: Convert to fraction form
    255,423.17/383,134.86 = 105,498.70/x
  3. Step 3: Cross multiply
    255,423.17x = 383,134.86 × 105,498.70
  4. Step 4: Simplify right side
    255,423.17x = 40,420,228,696.84
  5. Step 5: Solve for x
    x = 40,420,228,696.84/255,423.17
  6. Step 6: Final answer
    x = 158,248.09

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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.