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Finding the Fourth Proportional to 305,262.48, 421,263.46 and 169,309.12

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Solution

The fourth proportional to 305,262.48, 421,263.46 and 169,309.12 is: 233,647.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,262.48 : 421,263.46 = 169,309.12 : x
  2. Step 2: Convert to fraction form
    305,262.48/421,263.46 = 169,309.12/x
  3. Step 3: Cross multiply
    305,262.48x = 421,263.46 × 169,309.12
  4. Step 4: Simplify right side
    305,262.48x = 71,323,745,700.76
  5. Step 5: Solve for x
    x = 71,323,745,700.76/305,262.48
  6. Step 6: Final answer
    x = 233,647.27

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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.