Home / 314,930,748.70-472,396,123.05-142,413,190.30

Finding the Fourth Proportional to 314,930,748.70, 472,396,123.05 and 142,413,190.30

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Solution

The fourth proportional to 314,930,748.70, 472,396,123.05 and 142,413,190.30 is: 213,619,785.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,930,748.70 : 472,396,123.05 = 142,413,190.30 : x
  2. Step 2: Convert to fraction form
    314,930,748.70/472,396,123.05 = 142,413,190.30/x
  3. Step 3: Cross multiply
    314,930,748.70x = 472,396,123.05 × 142,413,190.30
  4. Step 4: Simplify right side
    314,930,748.70x = 67,275,438,968,901,872
  5. Step 5: Solve for x
    x = 67,275,438,968,901,872/314,930,748.70
  6. Step 6: Final answer
    x = 213,619,785.45

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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.