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Finding the Fourth Proportional to 346,722.90, 520,084.35 and 287,625.30

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Solution

The fourth proportional to 346,722.90, 520,084.35 and 287,625.30 is: 431,437.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,722.90 : 520,084.35 = 287,625.30 : x
  2. Step 2: Convert to fraction form
    346,722.90/520,084.35 = 287,625.30/x
  3. Step 3: Cross multiply
    346,722.90x = 520,084.35 × 287,625.30
  4. Step 4: Simplify right side
    346,722.90x = 149,589,417,194.06
  5. Step 5: Solve for x
    x = 149,589,417,194.06/346,722.90
  6. Step 6: Final answer
    x = 431,437.95

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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.