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Finding the Fourth Proportional to 239,712.48, 330,801.84 and 139,108.32

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Solution

The fourth proportional to 239,712.48, 330,801.84 and 139,108.32 is: 191,968.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,712.48 : 330,801.84 = 139,108.32 : x
  2. Step 2: Convert to fraction form
    239,712.48/330,801.84 = 139,108.32/x
  3. Step 3: Cross multiply
    239,712.48x = 330,801.84 × 139,108.32
  4. Step 4: Simplify right side
    239,712.48x = 46,017,288,215.31
  5. Step 5: Solve for x
    x = 46,017,288,215.31/239,712.48
  6. Step 6: Final answer
    x = 191,968.68

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1.5x scale

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.