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Finding the Fourth Proportional to 348,539.60, 522,118.20 and 207,880.40

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Solution

The fourth proportional to 348,539.60, 522,118.20 and 207,880.40 is: 311,408.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,539.60 : 522,118.20 = 207,880.40 : x
  2. Step 2: Convert to fraction form
    348,539.60/522,118.20 = 207,880.40/x
  3. Step 3: Cross multiply
    348,539.60x = 522,118.20 × 207,880.40
  4. Step 4: Simplify right side
    348,539.60x = 108,538,140,263.28
  5. Step 5: Solve for x
    x = 108,538,140,263.28/348,539.60
  6. Step 6: Final answer
    x = 311,408.35

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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.