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Finding the Fourth Proportional to 280,069,703.70, 420,104,555.55 and 150,929,540.70

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Solution

The fourth proportional to 280,069,703.70, 420,104,555.55 and 150,929,540.70 is: 226,394,311.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,069,703.70 : 420,104,555.55 = 150,929,540.70 : x
  2. Step 2: Convert to fraction form
    280,069,703.70/420,104,555.55 = 150,929,540.70/x
  3. Step 3: Cross multiply
    280,069,703.70x = 420,104,555.55 × 150,929,540.70
  4. Step 4: Simplify right side
    280,069,703.70x = 63,406,187,615,139,136
  5. Step 5: Solve for x
    x = 63,406,187,615,139,136/280,069,703.70
  6. Step 6: Final answer
    x = 226,394,311.05

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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.