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Finding the Fourth Proportional to 318,951, 478,426.50 and 131,967.36

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Solution

The fourth proportional to 318,951, 478,426.50 and 131,967.36 is: 197,951.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,951 : 478,426.50 = 131,967.36 : x
  2. Step 2: Convert to fraction form
    318,951/478,426.50 = 131,967.36/x
  3. Step 3: Cross multiply
    318,951x = 478,426.50 × 131,967.36
  4. Step 4: Simplify right side
    318,951x = 63,136,682,159.04
  5. Step 5: Solve for x
    x = 63,136,682,159.04/318,951
  6. Step 6: Final answer
    x = 197,951.04

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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.