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Finding the Fourth Proportional to 289,788.08, 434,685.15 and 79,426.01

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Solution

The fourth proportional to 289,788.08, 434,685.15 and 79,426.01 is: 119,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,788.08 : 434,685.15 = 79,426.01 : x
  2. Step 2: Convert to fraction form
    289,788.08/434,685.15 = 79,426.01/x
  3. Step 3: Cross multiply
    289,788.08x = 434,685.15 × 79,426.01
  4. Step 4: Simplify right side
    289,788.08x = 34,525,308,157.46
  5. Step 5: Solve for x
    x = 34,525,308,157.46/289,788.08
  6. Step 6: Final answer
    x = 119,139.85

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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.