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Finding the Fourth Proportional to 474,919.98, 655,390.62 and 257,130.96

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Solution

The fourth proportional to 474,919.98, 655,390.62 and 257,130.96 is: 354,841.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,919.98 : 655,390.62 = 257,130.96 : x
  2. Step 2: Convert to fraction form
    474,919.98/655,390.62 = 257,130.96/x
  3. Step 3: Cross multiply
    474,919.98x = 655,390.62 × 257,130.96
  4. Step 4: Simplify right side
    474,919.98x = 168,521,219,295.60
  5. Step 5: Solve for x
    x = 168,521,219,295.60/474,919.98
  6. Step 6: Final answer
    x = 354,841.29

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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.