Home / 289,128,307.90-398,611,699.39-229,787,753.46

Finding the Fourth Proportional to 289,128,307.90, 398,611,699.39 and 229,787,753.46

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Solution

The fourth proportional to 289,128,307.90, 398,611,699.39 and 229,787,753.46 is: 316,800,826.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,128,307.90 : 398,611,699.39 = 229,787,753.46 : x
  2. Step 2: Convert to fraction form
    289,128,307.90/398,611,699.39 = 229,787,753.46/x
  3. Step 3: Cross multiply
    289,128,307.90x = 398,611,699.39 × 229,787,753.46
  4. Step 4: Simplify right side
    289,128,307.90x = 91,596,086,906,064,400
  5. Step 5: Solve for x
    x = 91,596,086,906,064,400/289,128,307.90
  6. Step 6: Final answer
    x = 316,800,826.50

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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.