Home / 289,128,317.31-398,611,712.39-229,787,762.87

Finding the Fourth Proportional to 289,128,317.31, 398,611,712.39 and 229,787,762.87

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Solution

The fourth proportional to 289,128,317.31, 398,611,712.39 and 229,787,762.87 is: 316,800,839.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,128,317.31 : 398,611,712.39 = 229,787,762.87 : x
  2. Step 2: Convert to fraction form
    289,128,317.31/398,611,712.39 = 229,787,762.87/x
  3. Step 3: Cross multiply
    289,128,317.31x = 398,611,712.39 × 229,787,762.87
  4. Step 4: Simplify right side
    289,128,317.31x = 91,596,093,643,725,552
  5. Step 5: Solve for x
    x = 91,596,093,643,725,552/289,128,317.31
  6. Step 6: Final answer
    x = 316,800,839.49

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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.