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Finding the Fourth Proportional to 606,401.60, 909,605.10 and 157,090.55

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Solution

The fourth proportional to 606,401.60, 909,605.10 and 157,090.55 is: 235,636.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,401.60 : 909,605.10 = 157,090.55 : x
  2. Step 2: Convert to fraction form
    606,401.60/909,605.10 = 157,090.55/x
  3. Step 3: Cross multiply
    606,401.60x = 909,605.10 × 157,090.55
  4. Step 4: Simplify right side
    606,401.60x = 142,890,365,441.81
  5. Step 5: Solve for x
    x = 142,890,365,441.81/606,401.60
  6. Step 6: Final answer
    x = 235,636.52

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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.