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Finding the Fourth Proportional to 404,259.40, 606,390.90 and 104,718.70

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Solution

The fourth proportional to 404,259.40, 606,390.90 and 104,718.70 is: 157,078.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,259.40 : 606,390.90 = 104,718.70 : x
  2. Step 2: Convert to fraction form
    404,259.40/606,390.90 = 104,718.70/x
  3. Step 3: Cross multiply
    404,259.40x = 606,390.90 × 104,718.70
  4. Step 4: Simplify right side
    404,259.40x = 63,500,466,739.83
  5. Step 5: Solve for x
    x = 63,500,466,739.83/404,259.40
  6. Step 6: Final answer
    x = 157,078.52

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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.