Home / 281,100.48-387,923.36-153,776.96

Finding the Fourth Proportional to 281,100.48, 387,923.36 and 153,776.96

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Solution

The fourth proportional to 281,100.48, 387,923.36 and 153,776.96 is: 212,214.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,100.48 : 387,923.36 = 153,776.96 : x
  2. Step 2: Convert to fraction form
    281,100.48/387,923.36 = 153,776.96/x
  3. Step 3: Cross multiply
    281,100.48x = 387,923.36 × 153,776.96
  4. Step 4: Simplify right side
    281,100.48x = 59,653,675,013.79
  5. Step 5: Solve for x
    x = 59,653,675,013.79/281,100.48
  6. Step 6: Final answer
    x = 212,214.77

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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.