Home / 271,891,389.20-407,780,405.40-99,449,430.80

Finding the Fourth Proportional to 271,891,389.20, 407,780,405.40 and 99,449,430.80

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Solution

The fourth proportional to 271,891,389.20, 407,780,405.40 and 99,449,430.80 is: 149,153,415.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,891,389.20 : 407,780,405.40 = 99,449,430.80 : x
  2. Step 2: Convert to fraction form
    271,891,389.20/407,780,405.40 = 99,449,430.80/x
  3. Step 3: Cross multiply
    271,891,389.20x = 407,780,405.40 × 99,449,430.80
  4. Step 4: Simplify right side
    271,891,389.20x = 40,553,529,208,423,240
  5. Step 5: Solve for x
    x = 40,553,529,208,423,240/271,891,389.20
  6. Step 6: Final answer
    x = 149,153,415.00

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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.