Home / 369,021,639.20-553,616,439.60-215,588,717.60

Finding the Fourth Proportional to 369,021,639.20, 553,616,439.60 and 215,588,717.60

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Solution

The fourth proportional to 369,021,639.20, 553,616,439.60 and 215,588,717.60 is: 323,432,139.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,021,639.20 : 553,616,439.60 = 215,588,717.60 : x
  2. Step 2: Convert to fraction form
    369,021,639.20/553,616,439.60 = 215,588,717.60/x
  3. Step 3: Cross multiply
    369,021,639.20x = 553,616,439.60 × 215,588,717.60
  4. Step 4: Simplify right side
    369,021,639.20x = 119,353,458,255,641,856
  5. Step 5: Solve for x
    x = 119,353,458,255,641,856/369,021,639.20
  6. Step 6: Final answer
    x = 323,432,139.41

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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.