Home / 290,319,913.20-435,479,869.80-218,656,297.20

Finding the Fourth Proportional to 290,319,913.20, 435,479,869.80 and 218,656,297.20

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Solution

The fourth proportional to 290,319,913.20, 435,479,869.80 and 218,656,297.20 is: 327,984,445.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,319,913.20 : 435,479,869.80 = 218,656,297.20 : x
  2. Step 2: Convert to fraction form
    290,319,913.20/435,479,869.80 = 218,656,297.20/x
  3. Step 3: Cross multiply
    290,319,913.20x = 435,479,869.80 × 218,656,297.20
  4. Step 4: Simplify right side
    290,319,913.20x = 95,220,415,835,606,096
  5. Step 5: Solve for x
    x = 95,220,415,835,606,096/290,319,913.20
  6. Step 6: Final answer
    x = 327,984,445.80

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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.