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Finding the Fourth Proportional to 257,880.60, 355,861.62 and 144,700.92

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Solution

The fourth proportional to 257,880.60, 355,861.62 and 144,700.92 is: 199,679.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,880.60 : 355,861.62 = 144,700.92 : x
  2. Step 2: Convert to fraction form
    257,880.60/355,861.62 = 144,700.92/x
  3. Step 3: Cross multiply
    257,880.60x = 355,861.62 × 144,700.92
  4. Step 4: Simplify right side
    257,880.60x = 51,493,503,806.69
  5. Step 5: Solve for x
    x = 51,493,503,806.69/257,880.60
  6. Step 6: Final answer
    x = 199,679.63

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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.