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Finding the Fourth Proportional to 510,636.60, 704,672.55 and 281,189.10

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Solution

The fourth proportional to 510,636.60, 704,672.55 and 281,189.10 is: 388,037.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,636.60 : 704,672.55 = 281,189.10 : x
  2. Step 2: Convert to fraction form
    510,636.60/704,672.55 = 281,189.10/x
  3. Step 3: Cross multiply
    510,636.60x = 704,672.55 × 281,189.10
  4. Step 4: Simplify right side
    510,636.60x = 198,146,240,129.21
  5. Step 5: Solve for x
    x = 198,146,240,129.21/510,636.60
  6. Step 6: Final answer
    x = 388,037.68

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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.