Home / 289,721,760.60-434,582,640.90-221,697,312.60

Finding the Fourth Proportional to 289,721,760.60, 434,582,640.90 and 221,697,312.60

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Solution

The fourth proportional to 289,721,760.60, 434,582,640.90 and 221,697,312.60 is: 332,545,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,721,760.60 : 434,582,640.90 = 221,697,312.60 : x
  2. Step 2: Convert to fraction form
    289,721,760.60/434,582,640.90 = 221,697,312.60/x
  3. Step 3: Cross multiply
    289,721,760.60x = 434,582,640.90 × 221,697,312.60
  4. Step 4: Simplify right side
    289,721,760.60x = 96,345,803,590,140,832
  5. Step 5: Solve for x
    x = 96,345,803,590,140,832/289,721,760.60
  6. Step 6: Final answer
    x = 332,545,968.90

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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.