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Finding the Fourth Proportional to 381,509.32, 526,360.98 and 220,343.08

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Solution

The fourth proportional to 381,509.32, 526,360.98 and 220,343.08 is: 304,003.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,509.32 : 526,360.98 = 220,343.08 : x
  2. Step 2: Convert to fraction form
    381,509.32/526,360.98 = 220,343.08/x
  3. Step 3: Cross multiply
    381,509.32x = 526,360.98 × 220,343.08
  4. Step 4: Simplify right side
    381,509.32x = 115,979,999,525.02
  5. Step 5: Solve for x
    x = 115,979,999,525.02/381,509.32
  6. Step 6: Final answer
    x = 304,003.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.