Home / 289,231,471.71-399,197,363.72-171,822,026.79

Finding the Fourth Proportional to 289,231,471.71, 399,197,363.72 and 171,822,026.79

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Solution

The fourth proportional to 289,231,471.71, 399,197,363.72 and 171,822,026.79 is: 237,148,812.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,231,471.71 : 399,197,363.72 = 171,822,026.79 : x
  2. Step 2: Convert to fraction form
    289,231,471.71/399,197,363.72 = 171,822,026.79/x
  3. Step 3: Cross multiply
    289,231,471.71x = 399,197,363.72 × 171,822,026.79
  4. Step 4: Simplify right side
    289,231,471.71x = 68,590,900,122,736,096
  5. Step 5: Solve for x
    x = 68,590,900,122,736,096/289,231,471.71
  6. Step 6: Final answer
    x = 237,148,812.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.