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Finding the Fourth Proportional to 606,495.60, 909,743.40 and 157,212.90

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Solution

The fourth proportional to 606,495.60, 909,743.40 and 157,212.90 is: 235,819.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,495.60 : 909,743.40 = 157,212.90 : x
  2. Step 2: Convert to fraction form
    606,495.60/909,743.40 = 157,212.90/x
  3. Step 3: Cross multiply
    606,495.60x = 909,743.40 × 157,212.90
  4. Step 4: Simplify right side
    606,495.60x = 143,023,398,169.86
  5. Step 5: Solve for x
    x = 143,023,398,169.86/606,495.60
  6. Step 6: Final answer
    x = 235,819.35

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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.