Home / 387,731.19-581,638.50-163,114.48

Finding the Fourth Proportional to 387,731.19, 581,638.50 and 163,114.48

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Solution

The fourth proportional to 387,731.19, 581,638.50 and 163,114.48 is: 244,689.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,731.19 : 581,638.50 = 163,114.48 : x
  2. Step 2: Convert to fraction form
    387,731.19/581,638.50 = 163,114.48/x
  3. Step 3: Cross multiply
    387,731.19x = 581,638.50 × 163,114.48
  4. Step 4: Simplify right side
    387,731.19x = 94,873,661,475.48
  5. Step 5: Solve for x
    x = 94,873,661,475.48/387,731.19
  6. Step 6: Final answer
    x = 244,689.27

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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.