Home / 281,117.70-387,945.99-153,795.42

Finding the Fourth Proportional to 281,117.70, 387,945.99 and 153,795.42

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Solution

The fourth proportional to 281,117.70, 387,945.99 and 153,795.42 is: 212,239.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,117.70 : 387,945.99 = 153,795.42 : x
  2. Step 2: Convert to fraction form
    281,117.70/387,945.99 = 153,795.42/x
  3. Step 3: Cross multiply
    281,117.70x = 387,945.99 × 153,795.42
  4. Step 4: Simplify right side
    281,117.70x = 59,664,316,469.37
  5. Step 5: Solve for x
    x = 59,664,316,469.37/281,117.70
  6. Step 6: Final answer
    x = 212,239.63

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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.