Home / 285,780,211.40-428,129,427.18-168,845,872.52

Finding the Fourth Proportional to 285,780,211.40, 428,129,427.18 and 168,845,872.52

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Solution

The fourth proportional to 285,780,211.40, 428,129,427.18 and 168,845,872.52 is: 252,949,237.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,780,211.40 : 428,129,427.18 = 168,845,872.52 : x
  2. Step 2: Convert to fraction form
    285,780,211.40/428,129,427.18 = 168,845,872.52/x
  3. Step 3: Cross multiply
    285,780,211.40x = 428,129,427.18 × 168,845,872.52
  4. Step 4: Simplify right side
    285,780,211.40x = 72,287,886,683,694,912
  5. Step 5: Solve for x
    x = 72,287,886,683,694,912/285,780,211.40
  6. Step 6: Final answer
    x = 252,949,237.91

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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.