Home / 369,072,713.20-553,609,069.80-215,639,791.60

Finding the Fourth Proportional to 369,072,713.20, 553,609,069.80 and 215,639,791.60

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Solution

The fourth proportional to 369,072,713.20, 553,609,069.80 and 215,639,791.60 is: 323,459,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,072,713.20 : 553,609,069.80 = 215,639,791.60 : x
  2. Step 2: Convert to fraction form
    369,072,713.20/553,609,069.80 = 215,639,791.60/x
  3. Step 3: Cross multiply
    369,072,713.20x = 553,609,069.80 × 215,639,791.60
  4. Step 4: Simplify right side
    369,072,713.20x = 119,380,144,439,541,840
  5. Step 5: Solve for x
    x = 119,380,144,439,541,840/369,072,713.20
  6. Step 6: Final answer
    x = 323,459,687.40

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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.