Home / 311,931,029.20-468,904,313.40-287,744,558.80

Finding the Fourth Proportional to 311,931,029.20, 468,904,313.40 and 287,744,558.80

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Solution

The fourth proportional to 311,931,029.20, 468,904,313.40 and 287,744,558.80 is: 432,546,467.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,931,029.20 : 468,904,313.40 = 287,744,558.80 : x
  2. Step 2: Convert to fraction form
    311,931,029.20/468,904,313.40 = 287,744,558.80/x
  3. Step 3: Cross multiply
    311,931,029.20x = 468,904,313.40 × 287,744,558.80
  4. Step 4: Simplify right side
    311,931,029.20x = 134,924,664,778,699,920
  5. Step 5: Solve for x
    x = 134,924,664,778,699,920/311,931,029.20
  6. Step 6: Final answer
    x = 432,546,467.48

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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.