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Finding the Fourth Proportional to 352,990.40, 487,130.54 and 191,845.46

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Solution

The fourth proportional to 352,990.40, 487,130.54 and 191,845.46 is: 264,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,990.40 : 487,130.54 = 191,845.46 : x
  2. Step 2: Convert to fraction form
    352,990.40/487,130.54 = 191,845.46/x
  3. Step 3: Cross multiply
    352,990.40x = 487,130.54 × 191,845.46
  4. Step 4: Simplify right side
    352,990.40x = 93,453,782,784.95
  5. Step 5: Solve for x
    x = 93,453,782,784.95/352,990.40
  6. Step 6: Final answer
    x = 264,748.80

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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.