Home / 388,449,998.84-536,061,574.86-221,186,396.36

Finding the Fourth Proportional to 388,449,998.84, 536,061,574.86 and 221,186,396.36

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Solution

The fourth proportional to 388,449,998.84, 536,061,574.86 and 221,186,396.36 is: 305,237,555.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,449,998.84 : 536,061,574.86 = 221,186,396.36 : x
  2. Step 2: Convert to fraction form
    388,449,998.84/536,061,574.86 = 221,186,396.36/x
  3. Step 3: Cross multiply
    388,449,998.84x = 536,061,574.86 × 221,186,396.36
  4. Step 4: Simplify right side
    388,449,998.84x = 118,569,527,970,349,776
  5. Step 5: Solve for x
    x = 118,569,527,970,349,776/388,449,998.84
  6. Step 6: Final answer
    x = 305,237,555.22

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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.