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Finding the Fourth Proportional to 329,509.34, 494,167.10 and 139,968.20

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Solution

The fourth proportional to 329,509.34, 494,167.10 and 139,968.20 is: 209,911.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,509.34 : 494,167.10 = 139,968.20 : x
  2. Step 2: Convert to fraction form
    329,509.34/494,167.10 = 139,968.20/x
  3. Step 3: Cross multiply
    329,509.34x = 494,167.10 × 139,968.20
  4. Step 4: Simplify right side
    329,509.34x = 69,167,676,315.54
  5. Step 5: Solve for x
    x = 69,167,676,315.54/329,509.34
  6. Step 6: Final answer
    x = 209,911.13

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1.5x scale

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.