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Finding the Fourth Proportional to 325,633.86, 487,860.27 and 318,547.98

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Solution

The fourth proportional to 325,633.86, 487,860.27 and 318,547.98 is: 477,244.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,633.86 : 487,860.27 = 318,547.98 : x
  2. Step 2: Convert to fraction form
    325,633.86/487,860.27 = 318,547.98/x
  3. Step 3: Cross multiply
    325,633.86x = 487,860.27 × 318,547.98
  4. Step 4: Simplify right side
    325,633.86x = 155,406,902,311.10
  5. Step 5: Solve for x
    x = 155,406,902,311.10/325,633.86
  6. Step 6: Final answer
    x = 477,244.30

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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.