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Finding the Fourth Proportional to 285,290.64, 393,598.44 and 172,072.08

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Solution

The fourth proportional to 285,290.64, 393,598.44 and 172,072.08 is: 237,397.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,290.64 : 393,598.44 = 172,072.08 : x
  2. Step 2: Convert to fraction form
    285,290.64/393,598.44 = 172,072.08/x
  3. Step 3: Cross multiply
    285,290.64x = 393,598.44 × 172,072.08
  4. Step 4: Simplify right side
    285,290.64x = 67,727,302,255.56
  5. Step 5: Solve for x
    x = 67,727,302,255.56/285,290.64
  6. Step 6: Final answer
    x = 237,397.56

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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.