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Finding the Fourth Proportional to 346,515.20, 520,161.60 and 267,977.60

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Solution

The fourth proportional to 346,515.20, 520,161.60 and 267,977.60 is: 402,267.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,515.20 : 520,161.60 = 267,977.60 : x
  2. Step 2: Convert to fraction form
    346,515.20/520,161.60 = 267,977.60/x
  3. Step 3: Cross multiply
    346,515.20x = 520,161.60 × 267,977.60
  4. Step 4: Simplify right side
    346,515.20x = 139,391,657,180.16
  5. Step 5: Solve for x
    x = 139,391,657,180.16/346,515.20
  6. Step 6: Final answer
    x = 402,267.08

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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.