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Finding the Fourth Proportional to 305,800.48, 421,803.60 and 192,528.16

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Solution

The fourth proportional to 305,800.48, 421,803.60 and 192,528.16 is: 265,562.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,800.48 : 421,803.60 = 192,528.16 : x
  2. Step 2: Convert to fraction form
    305,800.48/421,803.60 = 192,528.16/x
  3. Step 3: Cross multiply
    305,800.48x = 421,803.60 × 192,528.16
  4. Step 4: Simplify right side
    305,800.48x = 81,209,070,989.38
  5. Step 5: Solve for x
    x = 81,209,070,989.38/305,800.48
  6. Step 6: Final answer
    x = 265,562.27

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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.