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Finding the Fourth Proportional to 239,699.48, 330,739.08 and 144,212.32

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Solution

The fourth proportional to 239,699.48, 330,739.08 and 144,212.32 is: 198,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,699.48 : 330,739.08 = 144,212.32 : x
  2. Step 2: Convert to fraction form
    239,699.48/330,739.08 = 144,212.32/x
  3. Step 3: Cross multiply
    239,699.48x = 330,739.08 × 144,212.32
  4. Step 4: Simplify right side
    239,699.48x = 47,696,650,041.47
  5. Step 5: Solve for x
    x = 47,696,650,041.47/239,699.48
  6. Step 6: Final answer
    x = 198,985.20

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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.