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Finding the Fourth Proportional to 243,363.36, 365,138.51 and 171,385.34

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Solution

The fourth proportional to 243,363.36, 365,138.51 and 171,385.34 is: 257,143.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,363.36 : 365,138.51 = 171,385.34 : x
  2. Step 2: Convert to fraction form
    243,363.36/365,138.51 = 171,385.34/x
  3. Step 3: Cross multiply
    243,363.36x = 365,138.51 × 171,385.34
  4. Step 4: Simplify right side
    243,363.36x = 62,579,387,739.36
  5. Step 5: Solve for x
    x = 62,579,387,739.36/243,363.36
  6. Step 6: Final answer
    x = 257,143.84

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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.