Home / 388,666,754.91-536,360,147.15-212,455,448.28

Finding the Fourth Proportional to 388,666,754.91, 536,360,147.15 and 212,455,448.28

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Solution

The fourth proportional to 388,666,754.91, 536,360,147.15 and 212,455,448.28 is: 293,188,532.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,666,754.91 : 536,360,147.15 = 212,455,448.28 : x
  2. Step 2: Convert to fraction form
    388,666,754.91/536,360,147.15 = 212,455,448.28/x
  3. Step 3: Cross multiply
    388,666,754.91x = 536,360,147.15 × 212,455,448.28
  4. Step 4: Simplify right side
    388,666,754.91x = 113,952,635,501,217,728
  5. Step 5: Solve for x
    x = 113,952,635,501,217,728/388,666,754.91
  6. Step 6: Final answer
    x = 293,188,532.49

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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.