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Finding the Fourth Proportional to 308,542.26, 425,810.12 and 172,588.93

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Solution

The fourth proportional to 308,542.26, 425,810.12 and 172,588.93 is: 238,184.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,542.26 : 425,810.12 = 172,588.93 : x
  2. Step 2: Convert to fraction form
    308,542.26/425,810.12 = 172,588.93/x
  3. Step 3: Cross multiply
    308,542.26x = 425,810.12 × 172,588.93
  4. Step 4: Simplify right side
    308,542.26x = 73,490,111,066.50
  5. Step 5: Solve for x
    x = 73,490,111,066.50/308,542.26
  6. Step 6: Final answer
    x = 238,184.91

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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.