Home / 369,021,640.20-553,616,441.10-215,588,718.60

Finding the Fourth Proportional to 369,021,640.20, 553,616,441.10 and 215,588,718.60

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Solution

The fourth proportional to 369,021,640.20, 553,616,441.10 and 215,588,718.60 is: 323,432,140.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,021,640.20 : 553,616,441.10 = 215,588,718.60 : x
  2. Step 2: Convert to fraction form
    369,021,640.20/553,616,441.10 = 215,588,718.60/x
  3. Step 3: Cross multiply
    369,021,640.20x = 553,616,441.10 × 215,588,718.60
  4. Step 4: Simplify right side
    369,021,640.20x = 119,353,459,132,641,376
  5. Step 5: Solve for x
    x = 119,353,459,132,641,376/369,021,640.20
  6. Step 6: Final answer
    x = 323,432,140.91

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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.