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Finding the Fourth Proportional to 305,302.60, 421,526.10 and 190,755.64

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Solution

The fourth proportional to 305,302.60, 421,526.10 and 190,755.64 is: 263,373.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,302.60 : 421,526.10 = 190,755.64 : x
  2. Step 2: Convert to fraction form
    305,302.60/421,526.10 = 190,755.64/x
  3. Step 3: Cross multiply
    305,302.60x = 421,526.10 × 190,755.64
  4. Step 4: Simplify right side
    305,302.60x = 80,408,480,982.20
  5. Step 5: Solve for x
    x = 80,408,480,982.20/305,302.60
  6. Step 6: Final answer
    x = 263,373.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.