Home / 388,679,449.81-536,377,681.14-212,468,163.23

Finding the Fourth Proportional to 388,679,449.81, 536,377,681.14 and 212,468,163.23

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Solution

The fourth proportional to 388,679,449.81, 536,377,681.14 and 212,468,163.23 is: 293,206,087.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,679,449.81 : 536,377,681.14 = 212,468,163.23 : x
  2. Step 2: Convert to fraction form
    388,679,449.81/536,377,681.14 = 212,468,163.23/x
  3. Step 3: Cross multiply
    388,679,449.81x = 536,377,681.14 × 212,468,163.23
  4. Step 4: Simplify right side
    388,679,449.81x = 113,963,180,709,382,400
  5. Step 5: Solve for x
    x = 113,963,180,709,382,400/388,679,449.81
  6. Step 6: Final answer
    x = 293,206,087.34

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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.