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Finding the Fourth Proportional to 289,699.56, 434,562.30 and 79,332.84

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Solution

The fourth proportional to 289,699.56, 434,562.30 and 79,332.84 is: 119,002.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,699.56 : 434,562.30 = 79,332.84 : x
  2. Step 2: Convert to fraction form
    289,699.56/434,562.30 = 79,332.84/x
  3. Step 3: Cross multiply
    289,699.56x = 434,562.30 × 79,332.84
  4. Step 4: Simplify right side
    289,699.56x = 34,475,061,415.93
  5. Step 5: Solve for x
    x = 34,475,061,415.93/289,699.56
  6. Step 6: Final answer
    x = 119,002.81

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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.