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Finding the Fourth Proportional to 281,132.70, 387,967.50 and 153,810.42

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Solution

The fourth proportional to 281,132.70, 387,967.50 and 153,810.42 is: 212,260.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,132.70 : 387,967.50 = 153,810.42 : x
  2. Step 2: Convert to fraction form
    281,132.70/387,967.50 = 153,810.42/x
  3. Step 3: Cross multiply
    281,132.70x = 387,967.50 × 153,810.42
  4. Step 4: Simplify right side
    281,132.70x = 59,673,444,121.35
  5. Step 5: Solve for x
    x = 59,673,444,121.35/281,132.70
  6. Step 6: Final answer
    x = 212,260.77

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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.