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Finding the Fourth Proportional to 209,601.80, 314,402.70 and 168,129.80

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Solution

The fourth proportional to 209,601.80, 314,402.70 and 168,129.80 is: 252,194.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,601.80 : 314,402.70 = 168,129.80 : x
  2. Step 2: Convert to fraction form
    209,601.80/314,402.70 = 168,129.80/x
  3. Step 3: Cross multiply
    209,601.80x = 314,402.70 × 168,129.80
  4. Step 4: Simplify right side
    209,601.80x = 52,860,463,070.46
  5. Step 5: Solve for x
    x = 52,860,463,070.46/209,601.80
  6. Step 6: Final answer
    x = 252,194.70

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1.5x scale

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.