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Finding the Fourth Proportional to 328,855.40, 493,296.82 and 104,210.87

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Solution

The fourth proportional to 328,855.40, 493,296.82 and 104,210.87 is: 156,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,855.40 : 493,296.82 = 104,210.87 : x
  2. Step 2: Convert to fraction form
    328,855.40/493,296.82 = 104,210.87/x
  3. Step 3: Cross multiply
    328,855.40x = 493,296.82 × 104,210.87
  4. Step 4: Simplify right side
    328,855.40x = 51,406,888,053.42
  5. Step 5: Solve for x
    x = 51,406,888,053.42/328,855.40
  6. Step 6: Final answer
    x = 156,320.65

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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.