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Finding the Fourth Proportional to 305,300.01, 420,827.20 and 240,663.84

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Solution

The fourth proportional to 305,300.01, 420,827.20 and 240,663.84 is: 331,732.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,300.01 : 420,827.20 = 240,663.84 : x
  2. Step 2: Convert to fraction form
    305,300.01/420,827.20 = 240,663.84/x
  3. Step 3: Cross multiply
    305,300.01x = 420,827.20 × 240,663.84
  4. Step 4: Simplify right side
    305,300.01x = 101,277,889,928.45
  5. Step 5: Solve for x
    x = 101,277,889,928.45/305,300.01
  6. Step 6: Final answer
    x = 331,732.35

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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.