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Finding the Fourth Proportional to 210,437,999.60, 315,656,999.40 and 159,419,663.60

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Solution

The fourth proportional to 210,437,999.60, 315,656,999.40 and 159,419,663.60 is: 239,129,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,437,999.60 : 315,656,999.40 = 159,419,663.60 : x
  2. Step 2: Convert to fraction form
    210,437,999.60/315,656,999.40 = 159,419,663.60/x
  3. Step 3: Cross multiply
    210,437,999.60x = 315,656,999.40 × 159,419,663.60
  4. Step 4: Simplify right side
    210,437,999.60x = 50,321,932,657,333,400
  5. Step 5: Solve for x
    x = 50,321,932,657,333,400/210,437,999.60
  6. Step 6: Final answer
    x = 239,129,495.40

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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.