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Finding the Fourth Proportional to 220,363,401.40, 330,146,970.90 and 188,512,905.40

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Solution

The fourth proportional to 220,363,401.40, 330,146,970.90 and 188,512,905.40 is: 282,428,771.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,363,401.40 : 330,146,970.90 = 188,512,905.40 : x
  2. Step 2: Convert to fraction form
    220,363,401.40/330,146,970.90 = 188,512,905.40/x
  3. Step 3: Cross multiply
    220,363,401.40x = 330,146,970.90 × 188,512,905.40
  4. Step 4: Simplify right side
    220,363,401.40x = 62,236,964,693,368,248
  5. Step 5: Solve for x
    x = 62,236,964,693,368,248/220,363,401.40
  6. Step 6: Final answer
    x = 282,428,771.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.