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Finding the Fourth Proportional to 525,399,991.40, 788,174,636.70 and 161,856,439.40

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Solution

The fourth proportional to 525,399,991.40, 788,174,636.70 and 161,856,439.40 is: 242,807,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,399,991.40 : 788,174,636.70 = 161,856,439.40 : x
  2. Step 2: Convert to fraction form
    525,399,991.40/788,174,636.70 = 161,856,439.40/x
  3. Step 3: Cross multiply
    525,399,991.40x = 788,174,636.70 × 161,856,439.40
  4. Step 4: Simplify right side
    525,399,991.40x = 127,571,140,321,650,576
  5. Step 5: Solve for x
    x = 127,571,140,321,650,576/525,399,991.40
  6. Step 6: Final answer
    x = 242,807,655.90

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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.