Home / 280,995.12-387,783.36-160,154.64

Finding the Fourth Proportional to 280,995.12, 387,783.36 and 160,154.64

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Solution

The fourth proportional to 280,995.12, 387,783.36 and 160,154.64 is: 221,019.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,995.12 : 387,783.36 = 160,154.64 : x
  2. Step 2: Convert to fraction form
    280,995.12/387,783.36 = 160,154.64/x
  3. Step 3: Cross multiply
    280,995.12x = 387,783.36 × 160,154.64
  4. Step 4: Simplify right side
    280,995.12x = 62,105,304,418.79
  5. Step 5: Solve for x
    x = 62,105,304,418.79/280,995.12
  6. Step 6: Final answer
    x = 221,019.16

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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.