Home / 287,784,231.40-431,676,347.10-201,619,930.60

Finding the Fourth Proportional to 287,784,231.40, 431,676,347.10 and 201,619,930.60

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Solution

The fourth proportional to 287,784,231.40, 431,676,347.10 and 201,619,930.60 is: 302,429,895.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,784,231.40 : 431,676,347.10 = 201,619,930.60 : x
  2. Step 2: Convert to fraction form
    287,784,231.40/431,676,347.10 = 201,619,930.60/x
  3. Step 3: Cross multiply
    287,784,231.40x = 431,676,347.10 × 201,619,930.60
  4. Step 4: Simplify right side
    287,784,231.40x = 87,034,555,143,963,520
  5. Step 5: Solve for x
    x = 87,034,555,143,963,520/287,784,231.40
  6. Step 6: Final answer
    x = 302,429,895.90

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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.