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Finding the Fourth Proportional to 257,473.34, 386,145.38 and 122,454.09

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Solution

The fourth proportional to 257,473.34, 386,145.38 and 122,454.09 is: 183,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,473.34 : 386,145.38 = 122,454.09 : x
  2. Step 2: Convert to fraction form
    257,473.34/386,145.38 = 122,454.09/x
  3. Step 3: Cross multiply
    257,473.34x = 386,145.38 × 122,454.09
  4. Step 4: Simplify right side
    257,473.34x = 47,285,081,421.74
  5. Step 5: Solve for x
    x = 47,285,081,421.74/257,473.34
  6. Step 6: Final answer
    x = 183,650.40

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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.