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Finding the Fourth Proportional to 402,791.78, 604,187.61 and 191,790.02

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Solution

The fourth proportional to 402,791.78, 604,187.61 and 191,790.02 is: 287,685.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,791.78 : 604,187.61 = 191,790.02 : x
  2. Step 2: Convert to fraction form
    402,791.78/604,187.61 = 191,790.02/x
  3. Step 3: Cross multiply
    402,791.78x = 604,187.61 × 191,790.02
  4. Step 4: Simplify right side
    402,791.78x = 115,877,150,784.71
  5. Step 5: Solve for x
    x = 115,877,150,784.71/402,791.78
  6. Step 6: Final answer
    x = 287,685.00

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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.