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Finding the Fourth Proportional to 328,901.72, 493,352.61 and 79,583.72

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Solution

The fourth proportional to 328,901.72, 493,352.61 and 79,583.72 is: 119,375.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,901.72 : 493,352.61 = 79,583.72 : x
  2. Step 2: Convert to fraction form
    328,901.72/493,352.61 = 79,583.72/x
  3. Step 3: Cross multiply
    328,901.72x = 493,352.61 × 79,583.72
  4. Step 4: Simplify right side
    328,901.72x = 39,262,833,210.31
  5. Step 5: Solve for x
    x = 39,262,833,210.31/328,901.72
  6. Step 6: Final answer
    x = 119,375.58

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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.