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Finding the Fourth Proportional to 559,210.72, 771,719.52 and 304,561.68

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Solution

The fourth proportional to 559,210.72, 771,719.52 and 304,561.68 is: 420,299.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,210.72 : 771,719.52 = 304,561.68 : x
  2. Step 2: Convert to fraction form
    559,210.72/771,719.52 = 304,561.68/x
  3. Step 3: Cross multiply
    559,210.72x = 771,719.52 × 304,561.68
  4. Step 4: Simplify right side
    559,210.72x = 235,036,193,499.99
  5. Step 5: Solve for x
    x = 235,036,193,499.99/559,210.72
  6. Step 6: Final answer
    x = 420,299.87

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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.