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Finding the Fourth Proportional to 209,859,240.80, 314,788,861.20 and 187,751,295.20

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Solution

The fourth proportional to 209,859,240.80, 314,788,861.20 and 187,751,295.20 is: 281,626,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,859,240.80 : 314,788,861.20 = 187,751,295.20 : x
  2. Step 2: Convert to fraction form
    209,859,240.80/314,788,861.20 = 187,751,295.20/x
  3. Step 3: Cross multiply
    209,859,240.80x = 314,788,861.20 × 187,751,295.20
  4. Step 4: Simplify right side
    209,859,240.80x = 59,102,016,404,833,024
  5. Step 5: Solve for x
    x = 59,102,016,404,833,024/209,859,240.80
  6. Step 6: Final answer
    x = 281,626,942.80

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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.