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Finding the Fourth Proportional to 221,299,515.70, 310,272,818.30 and 221,299,515.70

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Solution

The fourth proportional to 221,299,515.70, 310,272,818.30 and 221,299,515.70 is: 310,272,818.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,299,515.70 : 310,272,818.30 = 221,299,515.70 : x
  2. Step 2: Convert to fraction form
    221,299,515.70/310,272,818.30 = 221,299,515.70/x
  3. Step 3: Cross multiply
    221,299,515.70x = 310,272,818.30 × 221,299,515.70
  4. Step 4: Simplify right side
    221,299,515.70x = 68,663,224,424,664,096
  5. Step 5: Solve for x
    x = 68,663,224,424,664,096/221,299,515.70
  6. Step 6: Final answer
    x = 310,272,818.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.