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Finding the Fourth Proportional to 368,102.72, 507,774.30 and 220,889.50

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Solution

The fourth proportional to 368,102.72, 507,774.30 and 220,889.50 is: 304,703.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,102.72 : 507,774.30 = 220,889.50 : x
  2. Step 2: Convert to fraction form
    368,102.72/507,774.30 = 220,889.50/x
  3. Step 3: Cross multiply
    368,102.72x = 507,774.30 × 220,889.50
  4. Step 4: Simplify right side
    368,102.72x = 112,162,011,239.85
  5. Step 5: Solve for x
    x = 112,162,011,239.85/368,102.72
  6. Step 6: Final answer
    x = 304,703.02

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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.