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Finding the Fourth Proportional to 201,584,990.40, 302,433,472.80 and 86,624,606.40

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Solution

The fourth proportional to 201,584,990.40, 302,433,472.80 and 86,624,606.40 is: 129,960,968.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,584,990.40 : 302,433,472.80 = 86,624,606.40 : x
  2. Step 2: Convert to fraction form
    201,584,990.40/302,433,472.80 = 86,624,606.40/x
  3. Step 3: Cross multiply
    201,584,990.40x = 302,433,472.80 × 86,624,606.40
  4. Step 4: Simplify right side
    201,584,990.40x = 26,198,180,543,485,108
  5. Step 5: Solve for x
    x = 26,198,180,543,485,108/201,584,990.40
  6. Step 6: Final answer
    x = 129,960,968.28

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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.