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Finding the Fourth Proportional to 312,206.68, 468,120.34 and 122,439.70

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Solution

The fourth proportional to 312,206.68, 468,120.34 and 122,439.70 is: 183,585.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,206.68 : 468,120.34 = 122,439.70 : x
  2. Step 2: Convert to fraction form
    312,206.68/468,120.34 = 122,439.70/x
  3. Step 3: Cross multiply
    312,206.68x = 468,120.34 × 122,439.70
  4. Step 4: Simplify right side
    312,206.68x = 57,316,513,993.50
  5. Step 5: Solve for x
    x = 57,316,513,993.50/312,206.68
  6. Step 6: Final answer
    x = 183,585.16

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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.