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Finding the Fourth Proportional to 505,215.20, 756,073.20 and 347,751.20

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Solution

The fourth proportional to 505,215.20, 756,073.20 and 347,751.20 is: 520,422.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,215.20 : 756,073.20 = 347,751.20 : x
  2. Step 2: Convert to fraction form
    505,215.20/756,073.20 = 347,751.20/x
  3. Step 3: Cross multiply
    505,215.20x = 756,073.20 × 347,751.20
  4. Step 4: Simplify right side
    505,215.20x = 262,925,362,587.84
  5. Step 5: Solve for x
    x = 262,925,362,587.84/505,215.20
  6. Step 6: Final answer
    x = 520,422.51

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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.