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Finding the Fourth Proportional to 217,784.88, 300,590.64 and 156,694.32

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Solution

The fourth proportional to 217,784.88, 300,590.64 and 156,694.32 is: 216,272.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,784.88 : 300,590.64 = 156,694.32 : x
  2. Step 2: Convert to fraction form
    217,784.88/300,590.64 = 156,694.32/x
  3. Step 3: Cross multiply
    217,784.88x = 300,590.64 × 156,694.32
  4. Step 4: Simplify right side
    217,784.88x = 47,100,845,933.16
  5. Step 5: Solve for x
    x = 47,100,845,933.16/217,784.88
  6. Step 6: Final answer
    x = 216,272.34

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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.