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Finding the Fourth Proportional to 346,548.20, 520,356.90 and 189,084.20

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Solution

The fourth proportional to 346,548.20, 520,356.90 and 189,084.20 is: 283,917.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,548.20 : 520,356.90 = 189,084.20 : x
  2. Step 2: Convert to fraction form
    346,548.20/520,356.90 = 189,084.20/x
  3. Step 3: Cross multiply
    346,548.20x = 520,356.90 × 189,084.20
  4. Step 4: Simplify right side
    346,548.20x = 98,391,268,150.98
  5. Step 5: Solve for x
    x = 98,391,268,150.98/346,548.20
  6. Step 6: Final answer
    x = 283,917.99

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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.