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Finding the Fourth Proportional to 381,873.51, 572,590.77 and 157,388.91

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Solution

The fourth proportional to 381,873.51, 572,590.77 and 157,388.91 is: 235,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,873.51 : 572,590.77 = 157,388.91 : x
  2. Step 2: Convert to fraction form
    381,873.51/572,590.77 = 157,388.91/x
  3. Step 3: Cross multiply
    381,873.51x = 572,590.77 × 157,388.91
  4. Step 4: Simplify right side
    381,873.51x = 90,119,437,166.36
  5. Step 5: Solve for x
    x = 90,119,437,166.36/381,873.51
  6. Step 6: Final answer
    x = 235,992.90

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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.