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Finding the Fourth Proportional to 488,141.40, 731,628.90 and 251,362.20

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Solution

The fourth proportional to 488,141.40, 731,628.90 and 251,362.20 is: 376,742.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,141.40 : 731,628.90 = 251,362.20 : x
  2. Step 2: Convert to fraction form
    488,141.40/731,628.90 = 251,362.20/x
  3. Step 3: Cross multiply
    488,141.40x = 731,628.90 × 251,362.20
  4. Step 4: Simplify right side
    488,141.40x = 183,903,849,887.58
  5. Step 5: Solve for x
    x = 183,903,849,887.58/488,141.40
  6. Step 6: Final answer
    x = 376,742.99

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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.