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Finding the Fourth Proportional to 402,680.21, 604,020.47 and 118,370.77

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Solution

The fourth proportional to 402,680.21, 604,020.47 and 118,370.77 is: 177,556.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,680.21 : 604,020.47 = 118,370.77 : x
  2. Step 2: Convert to fraction form
    402,680.21/604,020.47 = 118,370.77/x
  3. Step 3: Cross multiply
    402,680.21x = 604,020.47 × 118,370.77
  4. Step 4: Simplify right side
    402,680.21x = 71,498,364,517.71
  5. Step 5: Solve for x
    x = 71,498,364,517.71/402,680.21
  6. Step 6: Final answer
    x = 177,556.19

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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.