Home / 369,072,709.20-553,609,063.80-215,639,787.60

Finding the Fourth Proportional to 369,072,709.20, 553,609,063.80 and 215,639,787.60

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Solution

The fourth proportional to 369,072,709.20, 553,609,063.80 and 215,639,787.60 is: 323,459,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,072,709.20 : 553,609,063.80 = 215,639,787.60 : x
  2. Step 2: Convert to fraction form
    369,072,709.20/553,609,063.80 = 215,639,787.60/x
  3. Step 3: Cross multiply
    369,072,709.20x = 553,609,063.80 × 215,639,787.60
  4. Step 4: Simplify right side
    369,072,709.20x = 119,380,140,931,266,832
  5. Step 5: Solve for x
    x = 119,380,140,931,266,832/369,072,709.20
  6. Step 6: Final answer
    x = 323,459,681.40

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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.