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Finding the Fourth Proportional to 312,408.39, 468,515.71 and 112,702.83

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Solution

The fourth proportional to 312,408.39, 468,515.71 and 112,702.83 is: 169,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,408.39 : 468,515.71 = 112,702.83 : x
  2. Step 2: Convert to fraction form
    312,408.39/468,515.71 = 112,702.83/x
  3. Step 3: Cross multiply
    312,408.39x = 468,515.71 × 112,702.83
  4. Step 4: Simplify right side
    312,408.39x = 52,803,046,416.46
  5. Step 5: Solve for x
    x = 52,803,046,416.46/312,408.39
  6. Step 6: Final answer
    x = 169,019.30

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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.