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Finding the Fourth Proportional to 274,603,416.60, 411,905,124.90 and 145,161,010.20

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Solution

The fourth proportional to 274,603,416.60, 411,905,124.90 and 145,161,010.20 is: 217,741,515.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,603,416.60 : 411,905,124.90 = 145,161,010.20 : x
  2. Step 2: Convert to fraction form
    274,603,416.60/411,905,124.90 = 145,161,010.20/x
  3. Step 3: Cross multiply
    274,603,416.60x = 411,905,124.90 × 145,161,010.20
  4. Step 4: Simplify right side
    274,603,416.60x = 59,792,564,037,041,168
  5. Step 5: Solve for x
    x = 59,792,564,037,041,168/274,603,416.60
  6. Step 6: Final answer
    x = 217,741,515.30

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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.