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Finding the Fourth Proportional to 287,592,311.80, 431,388,467.70 and 93,510,058.60

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Solution

The fourth proportional to 287,592,311.80, 431,388,467.70 and 93,510,058.60 is: 140,265,087.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,592,311.80 : 431,388,467.70 = 93,510,058.60 : x
  2. Step 2: Convert to fraction form
    287,592,311.80/431,388,467.70 = 93,510,058.60/x
  3. Step 3: Cross multiply
    287,592,311.80x = 431,388,467.70 × 93,510,058.60
  4. Step 4: Simplify right side
    287,592,311.80x = 40,339,160,893,991,200
  5. Step 5: Solve for x
    x = 40,339,160,893,991,200/287,592,311.80
  6. Step 6: Final answer
    x = 140,265,087.90

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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.