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Finding the Fourth Proportional to 307,449.35, 424,280.67 and 171,492.09

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Solution

The fourth proportional to 307,449.35, 424,280.67 and 171,492.09 is: 236,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,449.35 : 424,280.67 = 171,492.09 : x
  2. Step 2: Convert to fraction form
    307,449.35/424,280.67 = 171,492.09/x
  3. Step 3: Cross multiply
    307,449.35x = 424,280.67 × 171,492.09
  4. Step 4: Simplify right side
    307,449.35x = 72,760,778,844.90
  5. Step 5: Solve for x
    x = 72,760,778,844.90/307,449.35
  6. Step 6: Final answer
    x = 236,659.40

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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.