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Finding the Fourth Proportional to 307,328.76, 424,111.95 and 171,364.34

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Solution

The fourth proportional to 307,328.76, 424,111.95 and 171,364.34 is: 236,481.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,328.76 : 424,111.95 = 171,364.34 : x
  2. Step 2: Convert to fraction form
    307,328.76/424,111.95 = 171,364.34/x
  3. Step 3: Cross multiply
    307,328.76x = 424,111.95 × 171,364.34
  4. Step 4: Simplify right side
    307,328.76x = 72,677,662,277.30
  5. Step 5: Solve for x
    x = 72,677,662,277.30/307,328.76
  6. Step 6: Final answer
    x = 236,481.81

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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.