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Finding the Fourth Proportional to 290,364.48, 400,701.60 and 163,051.20

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Solution

The fourth proportional to 290,364.48, 400,701.60 and 163,051.20 is: 225,009.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,364.48 : 400,701.60 = 163,051.20 : x
  2. Step 2: Convert to fraction form
    290,364.48/400,701.60 = 163,051.20/x
  3. Step 3: Cross multiply
    290,364.48x = 400,701.60 × 163,051.20
  4. Step 4: Simplify right side
    290,364.48x = 65,334,876,721.92
  5. Step 5: Solve for x
    x = 65,334,876,721.92/290,364.48
  6. Step 6: Final answer
    x = 225,009.88

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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.