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Finding the Fourth Proportional to 312,373.40, 468,555.88 and 75,718.16

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Solution

The fourth proportional to 312,373.40, 468,555.88 and 75,718.16 is: 113,576.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,373.40 : 468,555.88 = 75,718.16 : x
  2. Step 2: Convert to fraction form
    312,373.40/468,555.88 = 75,718.16/x
  3. Step 3: Cross multiply
    312,373.40x = 468,555.88 × 75,718.16
  4. Step 4: Simplify right side
    312,373.40x = 35,478,189,090.78
  5. Step 5: Solve for x
    x = 35,478,189,090.78/312,373.40
  6. Step 6: Final answer
    x = 113,576.22

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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.