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Finding the Fourth Proportional to 307,540.88, 424,421.16 and 173,402

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Solution

The fourth proportional to 307,540.88, 424,421.16 and 173,402 is: 239,303.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,540.88 : 424,421.16 = 173,402 : x
  2. Step 2: Convert to fraction form
    307,540.88/424,421.16 = 173,402/x
  3. Step 3: Cross multiply
    307,540.88x = 424,421.16 × 173,402
  4. Step 4: Simplify right side
    307,540.88x = 73,595,477,986.32
  5. Step 5: Solve for x
    x = 73,595,477,986.32/307,540.88
  6. Step 6: Final answer
    x = 239,303.07

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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.