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Finding the Fourth Proportional to 240,212.34, 331,525.92 and 138,235.68

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Solution

The fourth proportional to 240,212.34, 331,525.92 and 138,235.68 is: 190,784.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,212.34 : 331,525.92 = 138,235.68 : x
  2. Step 2: Convert to fraction form
    240,212.34/331,525.92 = 138,235.68/x
  3. Step 3: Cross multiply
    240,212.34x = 331,525.92 × 138,235.68
  4. Step 4: Simplify right side
    240,212.34x = 45,828,710,988.83
  5. Step 5: Solve for x
    x = 45,828,710,988.83/240,212.34
  6. Step 6: Final answer
    x = 190,784.17

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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.