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Finding the Fourth Proportional to 281,157.39, 387,987.57 and 160,337.61

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Solution

The fourth proportional to 281,157.39, 387,987.57 and 160,337.61 is: 221,260.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,157.39 : 387,987.57 = 160,337.61 : x
  2. Step 2: Convert to fraction form
    281,157.39/387,987.57 = 160,337.61/x
  3. Step 3: Cross multiply
    281,157.39x = 387,987.57 × 160,337.61
  4. Step 4: Simplify right side
    281,157.39x = 62,208,999,683.51
  5. Step 5: Solve for x
    x = 62,208,999,683.51/281,157.39
  6. Step 6: Final answer
    x = 221,260.41

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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.