Home / 388,530,955.88-536,203,283.46-221,274,289.16

Finding the Fourth Proportional to 388,530,955.88, 536,203,283.46 and 221,274,289.16

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Solution

The fourth proportional to 388,530,955.88, 536,203,283.46 and 221,274,289.16 is: 305,375,925.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,530,955.88 : 536,203,283.46 = 221,274,289.16 : x
  2. Step 2: Convert to fraction form
    388,530,955.88/536,203,283.46 = 221,274,289.16/x
  3. Step 3: Cross multiply
    388,530,955.88x = 536,203,283.46 × 221,274,289.16
  4. Step 4: Simplify right side
    388,530,955.88x = 118,648,000,392,869,472
  5. Step 5: Solve for x
    x = 118,648,000,392,869,472/388,530,955.88
  6. Step 6: Final answer
    x = 305,375,925.90

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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.