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Finding the Fourth Proportional to 312,430.63, 468,667.81 and 125,442.13

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Solution

The fourth proportional to 312,430.63, 468,667.81 and 125,442.13 is: 188,171.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,430.63 : 468,667.81 = 125,442.13 : x
  2. Step 2: Convert to fraction form
    312,430.63/468,667.81 = 125,442.13/x
  3. Step 3: Cross multiply
    312,430.63x = 468,667.81 × 125,442.13
  4. Step 4: Simplify right side
    312,430.63x = 58,790,688,348.84
  5. Step 5: Solve for x
    x = 58,790,688,348.84/312,430.63
  6. Step 6: Final answer
    x = 188,171.97

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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.