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Finding the Fourth Proportional to 331,447.40, 497,343.90 and 144,477.80

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Solution

The fourth proportional to 331,447.40, 497,343.90 and 144,477.80 is: 216,792.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,447.40 : 497,343.90 = 144,477.80 : x
  2. Step 2: Convert to fraction form
    331,447.40/497,343.90 = 144,477.80/x
  3. Step 3: Cross multiply
    331,447.40x = 497,343.90 × 144,477.80
  4. Step 4: Simplify right side
    331,447.40x = 71,855,152,515.42
  5. Step 5: Solve for x
    x = 71,855,152,515.42/331,447.40
  6. Step 6: Final answer
    x = 216,792.02

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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.