Home / 388,312,341.72-535,867,846.98-212,100,449.46

Finding the Fourth Proportional to 388,312,341.72, 535,867,846.98 and 212,100,449.46

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Solution

The fourth proportional to 388,312,341.72, 535,867,846.98 and 212,100,449.46 is: 292,696,880.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,312,341.72 : 535,867,846.98 = 212,100,449.46 : x
  2. Step 2: Convert to fraction form
    388,312,341.72/535,867,846.98 = 212,100,449.46/x
  3. Step 3: Cross multiply
    388,312,341.72x = 535,867,846.98 × 212,100,449.46
  4. Step 4: Simplify right side
    388,312,341.72x = 113,657,811,195,620,512
  5. Step 5: Solve for x
    x = 113,657,811,195,620,512/388,312,341.72
  6. Step 6: Final answer
    x = 292,696,880.79

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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.