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Finding the Fourth Proportional to 305,293.60, 421,325.60 and 169,370.76

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Solution

The fourth proportional to 305,293.60, 421,325.60 and 169,370.76 is: 233,742.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,293.60 : 421,325.60 = 169,370.76 : x
  2. Step 2: Convert to fraction form
    305,293.60/421,325.60 = 169,370.76/x
  3. Step 3: Cross multiply
    305,293.60x = 421,325.60 × 169,370.76
  4. Step 4: Simplify right side
    305,293.60x = 71,360,237,079.46
  5. Step 5: Solve for x
    x = 71,360,237,079.46/305,293.60
  6. Step 6: Final answer
    x = 233,742.98

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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.