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Finding the Fourth Proportional to 453,915, 680,811.21 and 187,638.57

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Solution

The fourth proportional to 453,915, 680,811.21 and 187,638.57 is: 281,432.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,915 : 680,811.21 = 187,638.57 : x
  2. Step 2: Convert to fraction form
    453,915/680,811.21 = 187,638.57/x
  3. Step 3: Cross multiply
    453,915x = 680,811.21 × 187,638.57
  4. Step 4: Simplify right side
    453,915x = 127,746,441,884.37
  5. Step 5: Solve for x
    x = 127,746,441,884.37/453,915
  6. Step 6: Final answer
    x = 281,432.52

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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.