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Finding the Fourth Proportional to 283,323.88, 390,988.38 and 162,469.72

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Solution

The fourth proportional to 283,323.88, 390,988.38 and 162,469.72 is: 224,209.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,323.88 : 390,988.38 = 162,469.72 : x
  2. Step 2: Convert to fraction form
    283,323.88/390,988.38 = 162,469.72/x
  3. Step 3: Cross multiply
    283,323.88x = 390,988.38 × 162,469.72
  4. Step 4: Simplify right side
    283,323.88x = 63,523,772,621.85
  5. Step 5: Solve for x
    x = 63,523,772,621.85/283,323.88
  6. Step 6: Final answer
    x = 224,209.03

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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.