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Finding the Fourth Proportional to 291,920.80, 437,881.20 and 268,301.20

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Solution

The fourth proportional to 291,920.80, 437,881.20 and 268,301.20 is: 402,451.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,920.80 : 437,881.20 = 268,301.20 : x
  2. Step 2: Convert to fraction form
    291,920.80/437,881.20 = 268,301.20/x
  3. Step 3: Cross multiply
    291,920.80x = 437,881.20 × 268,301.20
  4. Step 4: Simplify right side
    291,920.80x = 117,484,051,417.44
  5. Step 5: Solve for x
    x = 117,484,051,417.44/291,920.80
  6. Step 6: Final answer
    x = 402,451.80

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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.