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Finding the Fourth Proportional to 281,049.48, 387,840.24 and 153,722.28

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Solution

The fourth proportional to 281,049.48, 387,840.24 and 153,722.28 is: 212,132.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,049.48 : 387,840.24 = 153,722.28 : x
  2. Step 2: Convert to fraction form
    281,049.48/387,840.24 = 153,722.28/x
  3. Step 3: Cross multiply
    281,049.48x = 387,840.24 × 153,722.28
  4. Step 4: Simplify right side
    281,049.48x = 59,619,685,968.55
  5. Step 5: Solve for x
    x = 59,619,685,968.55/281,049.48
  6. Step 6: Final answer
    x = 212,132.35

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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.