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Finding the Fourth Proportional to 143,348.78, 215,050.23 and 47,291.49

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Solution

The fourth proportional to 143,348.78, 215,050.23 and 47,291.49 is: 70,946.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,348.78 : 215,050.23 = 47,291.49 : x
  2. Step 2: Convert to fraction form
    143,348.78/215,050.23 = 47,291.49/x
  3. Step 3: Cross multiply
    143,348.78x = 215,050.23 × 47,291.49
  4. Step 4: Simplify right side
    143,348.78x = 10,170,045,801.54
  5. Step 5: Solve for x
    x = 10,170,045,801.54/143,348.78
  6. Step 6: Final answer
    x = 70,946.16

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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.