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Finding the Fourth Proportional to 307,607.40, 424,499.24 and 171,638.88

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Solution

The fourth proportional to 307,607.40, 424,499.24 and 171,638.88 is: 236,862.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,607.40 : 424,499.24 = 171,638.88 : x
  2. Step 2: Convert to fraction form
    307,607.40/424,499.24 = 171,638.88/x
  3. Step 3: Cross multiply
    307,607.40x = 424,499.24 × 171,638.88
  4. Step 4: Simplify right side
    307,607.40x = 72,860,574,114.45
  5. Step 5: Solve for x
    x = 72,860,574,114.45/307,607.40
  6. Step 6: Final answer
    x = 236,862.23

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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.