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Finding the Fourth Proportional to 307,642.51, 424,545.87 and 171,668.35

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Solution

The fourth proportional to 307,642.51, 424,545.87 and 171,668.35 is: 236,901.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,642.51 : 424,545.87 = 171,668.35 : x
  2. Step 2: Convert to fraction form
    307,642.51/424,545.87 = 171,668.35/x
  3. Step 3: Cross multiply
    307,642.51x = 424,545.87 × 171,668.35
  4. Step 4: Simplify right side
    307,642.51x = 72,881,089,002.21
  5. Step 5: Solve for x
    x = 72,881,089,002.21/307,642.51
  6. Step 6: Final answer
    x = 236,901.88

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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.