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Finding the Fourth Proportional to 391,200.30, 586,800.45 and 201,660.30

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Solution

The fourth proportional to 391,200.30, 586,800.45 and 201,660.30 is: 302,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,200.30 : 586,800.45 = 201,660.30 : x
  2. Step 2: Convert to fraction form
    391,200.30/586,800.45 = 201,660.30/x
  3. Step 3: Cross multiply
    391,200.30x = 586,800.45 × 201,660.30
  4. Step 4: Simplify right side
    391,200.30x = 118,334,354,787.14
  5. Step 5: Solve for x
    x = 118,334,354,787.14/391,200.30
  6. Step 6: Final answer
    x = 302,490.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.