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Finding the Fourth Proportional to 348,559.20, 522,061.20 and 286,351.20

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Solution

The fourth proportional to 348,559.20, 522,061.20 and 286,351.20 is: 428,887.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,559.20 : 522,061.20 = 286,351.20 : x
  2. Step 2: Convert to fraction form
    348,559.20/522,061.20 = 286,351.20/x
  3. Step 3: Cross multiply
    348,559.20x = 522,061.20 × 286,351.20
  4. Step 4: Simplify right side
    348,559.20x = 149,492,851,093.44
  5. Step 5: Solve for x
    x = 149,492,851,093.44/348,559.20
  6. Step 6: Final answer
    x = 428,887.98

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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.