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Finding the Fourth Proportional to 606,389.60, 909,587.10 and 157,078.55

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Solution

The fourth proportional to 606,389.60, 909,587.10 and 157,078.55 is: 235,618.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,389.60 : 909,587.10 = 157,078.55 : x
  2. Step 2: Convert to fraction form
    606,389.60/909,587.10 = 157,078.55/x
  3. Step 3: Cross multiply
    606,389.60x = 909,587.10 × 157,078.55
  4. Step 4: Simplify right side
    606,389.60x = 142,876,622,766.71
  5. Step 5: Solve for x
    x = 142,876,622,766.71/606,389.60
  6. Step 6: Final answer
    x = 235,618.52

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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.