Home / 388,633,891.55-536,313,992.79-221,370,089.43

Finding the Fourth Proportional to 388,633,891.55, 536,313,992.79 and 221,370,089.43

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Solution

The fourth proportional to 388,633,891.55, 536,313,992.79 and 221,370,089.43 is: 305,490,280.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,633,891.55 : 536,313,992.79 = 221,370,089.43 : x
  2. Step 2: Convert to fraction form
    388,633,891.55/536,313,992.79 = 221,370,089.43/x
  3. Step 3: Cross multiply
    388,633,891.55x = 536,313,992.79 × 221,370,089.43
  4. Step 4: Simplify right side
    388,633,891.55x = 118,723,876,546,482,688
  5. Step 5: Solve for x
    x = 118,723,876,546,482,688/388,633,891.55
  6. Step 6: Final answer
    x = 305,490,280.52

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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.