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Finding the Fourth Proportional to 307,458.66, 424,291.86 and 171,492.50

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Solution

The fourth proportional to 307,458.66, 424,291.86 and 171,492.50 is: 236,659.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,458.66 : 424,291.86 = 171,492.50 : x
  2. Step 2: Convert to fraction form
    307,458.66/424,291.86 = 171,492.50/x
  3. Step 3: Cross multiply
    307,458.66x = 424,291.86 × 171,492.50
  4. Step 4: Simplify right side
    307,458.66x = 72,762,871,801.05
  5. Step 5: Solve for x
    x = 72,762,871,801.05/307,458.66
  6. Step 6: Final answer
    x = 236,659.04

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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.