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Finding the Fourth Proportional to 340,485.72, 510,038.32 and 157,860

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Solution

The fourth proportional to 340,485.72, 510,038.32 and 157,860 is: 236,469.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,485.72 : 510,038.32 = 157,860 : x
  2. Step 2: Convert to fraction form
    340,485.72/510,038.32 = 157,860/x
  3. Step 3: Cross multiply
    340,485.72x = 510,038.32 × 157,860
  4. Step 4: Simplify right side
    340,485.72x = 80,514,649,195.20
  5. Step 5: Solve for x
    x = 80,514,649,195.20/340,485.72
  6. Step 6: Final answer
    x = 236,469.97

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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.