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Finding the Fourth Proportional to 308,368.44, 425,549.16 and 172,407.24

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Solution

The fourth proportional to 308,368.44, 425,549.16 and 172,407.24 is: 237,922.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,368.44 : 425,549.16 = 172,407.24 : x
  2. Step 2: Convert to fraction form
    308,368.44/425,549.16 = 172,407.24/x
  3. Step 3: Cross multiply
    308,368.44x = 425,549.16 × 172,407.24
  4. Step 4: Simplify right side
    308,368.44x = 73,367,756,159.92
  5. Step 5: Solve for x
    x = 73,367,756,159.92/308,368.44
  6. Step 6: Final answer
    x = 237,922.39

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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.