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Finding the Fourth Proportional to 312,447.39, 468,671.10 and 87,798.75

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Solution

The fourth proportional to 312,447.39, 468,671.10 and 87,798.75 is: 131,698.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,447.39 : 468,671.10 = 87,798.75 : x
  2. Step 2: Convert to fraction form
    312,447.39/468,671.10 = 87,798.75/x
  3. Step 3: Cross multiply
    312,447.39x = 468,671.10 × 87,798.75
  4. Step 4: Simplify right side
    312,447.39x = 41,148,736,741.13
  5. Step 5: Solve for x
    x = 41,148,736,741.13/312,447.39
  6. Step 6: Final answer
    x = 131,698.13

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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.