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Finding the Fourth Proportional to 293,004.40, 439,506.60 and 172,938.10

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Solution

The fourth proportional to 293,004.40, 439,506.60 and 172,938.10 is: 259,407.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,004.40 : 439,506.60 = 172,938.10 : x
  2. Step 2: Convert to fraction form
    293,004.40/439,506.60 = 172,938.10/x
  3. Step 3: Cross multiply
    293,004.40x = 439,506.60 × 172,938.10
  4. Step 4: Simplify right side
    293,004.40x = 76,007,436,341.46
  5. Step 5: Solve for x
    x = 76,007,436,341.46/293,004.40
  6. Step 6: Final answer
    x = 259,407.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.