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Finding the Fourth Proportional to 308,587.68, 425,830.92 and 172,598.07

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Solution

The fourth proportional to 308,587.68, 425,830.92 and 172,598.07 is: 238,174.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,587.68 : 425,830.92 = 172,598.07 : x
  2. Step 2: Convert to fraction form
    308,587.68/425,830.92 = 172,598.07/x
  3. Step 3: Cross multiply
    308,587.68x = 425,830.92 × 172,598.07
  4. Step 4: Simplify right side
    308,587.68x = 73,497,594,938.32
  5. Step 5: Solve for x
    x = 73,497,594,938.32/308,587.68
  6. Step 6: Final answer
    x = 238,174.11

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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.