Home / 369,072,738.20-553,609,107.30-215,639,816.60

Finding the Fourth Proportional to 369,072,738.20, 553,609,107.30 and 215,639,816.60

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Solution

The fourth proportional to 369,072,738.20, 553,609,107.30 and 215,639,816.60 is: 323,459,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,072,738.20 : 553,609,107.30 = 215,639,816.60 : x
  2. Step 2: Convert to fraction form
    369,072,738.20/553,609,107.30 = 215,639,816.60/x
  3. Step 3: Cross multiply
    369,072,738.20x = 553,609,107.30 × 215,639,816.60
  4. Step 4: Simplify right side
    369,072,738.20x = 119,380,166,366,261,712
  5. Step 5: Solve for x
    x = 119,380,166,366,261,712/369,072,738.20
  6. Step 6: Final answer
    x = 323,459,724.90

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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.