Home / 281,108.48-387,934.40-153,784.96

Finding the Fourth Proportional to 281,108.48, 387,934.40 and 153,784.96

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Solution

The fourth proportional to 281,108.48, 387,934.40 and 153,784.96 is: 212,225.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,108.48 : 387,934.40 = 153,784.96 : x
  2. Step 2: Convert to fraction form
    281,108.48/387,934.40 = 153,784.96/x
  3. Step 3: Cross multiply
    281,108.48x = 387,934.40 × 153,784.96
  4. Step 4: Simplify right side
    281,108.48x = 59,658,476,186.62
  5. Step 5: Solve for x
    x = 59,658,476,186.62/281,108.48
  6. Step 6: Final answer
    x = 212,225.81

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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.