Home / 388,449,730.45-536,061,203.81-221,186,127.61

Finding the Fourth Proportional to 388,449,730.45, 536,061,203.81 and 221,186,127.61

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Solution

The fourth proportional to 388,449,730.45, 536,061,203.81 and 221,186,127.61 is: 305,237,183.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,449,730.45 : 536,061,203.81 = 221,186,127.61 : x
  2. Step 2: Convert to fraction form
    388,449,730.45/536,061,203.81 = 221,186,127.61/x
  3. Step 3: Cross multiply
    388,449,730.45x = 536,061,203.81 × 221,186,127.61
  4. Step 4: Simplify right side
    388,449,730.45x = 118,569,301,832,688,880
  5. Step 5: Solve for x
    x = 118,569,301,832,688,880/388,449,730.45
  6. Step 6: Final answer
    x = 305,237,183.96

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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.