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Finding the Fourth Proportional to 312,451.08, 468,678.72 and 112,631.58

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Solution

The fourth proportional to 312,451.08, 468,678.72 and 112,631.58 is: 168,948.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,451.08 : 468,678.72 = 112,631.58 : x
  2. Step 2: Convert to fraction form
    312,451.08/468,678.72 = 112,631.58/x
  3. Step 3: Cross multiply
    312,451.08x = 468,678.72 × 112,631.58
  4. Step 4: Simplify right side
    312,451.08x = 52,788,024,745.98
  5. Step 5: Solve for x
    x = 52,788,024,745.98/312,451.08
  6. Step 6: Final answer
    x = 168,948.13

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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.