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Finding the Fourth Proportional to 315,633.62, 435,576.71 and 172,393.67

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Solution

The fourth proportional to 315,633.62, 435,576.71 and 172,393.67 is: 237,904.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,633.62 : 435,576.71 = 172,393.67 : x
  2. Step 2: Convert to fraction form
    315,633.62/435,576.71 = 172,393.67/x
  3. Step 3: Cross multiply
    315,633.62x = 435,576.71 × 172,393.67
  4. Step 4: Simplify right side
    315,633.62x = 75,090,667,603.43
  5. Step 5: Solve for x
    x = 75,090,667,603.43/315,633.62
  6. Step 6: Final answer
    x = 237,904.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.