Home / 388,513,772.34-536,179,575.15-221,257,112.10

Finding the Fourth Proportional to 388,513,772.34, 536,179,575.15 and 221,257,112.10

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Solution

The fourth proportional to 388,513,772.34, 536,179,575.15 and 221,257,112.10 is: 305,352,223.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,513,772.34 : 536,179,575.15 = 221,257,112.10 : x
  2. Step 2: Convert to fraction form
    388,513,772.34/536,179,575.15 = 221,257,112.10/x
  3. Step 3: Cross multiply
    388,513,772.34x = 536,179,575.15 × 221,257,112.10
  4. Step 4: Simplify right side
    388,513,772.34x = 118,633,544,364,693,920
  5. Step 5: Solve for x
    x = 118,633,544,364,693,920/388,513,772.34
  6. Step 6: Final answer
    x = 305,352,223.81

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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.