Home / 221,136,839.20-305,166,755.28-122,018,482.72

Finding the Fourth Proportional to 221,136,839.20, 305,166,755.28 and 122,018,482.72

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Solution

The fourth proportional to 221,136,839.20, 305,166,755.28 and 122,018,482.72 is: 168,384,356.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,136,839.20 : 305,166,755.28 = 122,018,482.72 : x
  2. Step 2: Convert to fraction form
    221,136,839.20/305,166,755.28 = 122,018,482.72/x
  3. Step 3: Cross multiply
    221,136,839.20x = 305,166,755.28 × 122,018,482.72
  4. Step 4: Simplify right side
    221,136,839.20x = 37,235,984,455,851,144
  5. Step 5: Solve for x
    x = 37,235,984,455,851,144/221,136,839.20
  6. Step 6: Final answer
    x = 168,384,356.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.