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Finding the Fourth Proportional to 289,374.20, 433,715.70 and 120,894.20

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Solution

The fourth proportional to 289,374.20, 433,715.70 and 120,894.20 is: 181,196.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,374.20 : 433,715.70 = 120,894.20 : x
  2. Step 2: Convert to fraction form
    289,374.20/433,715.70 = 120,894.20/x
  3. Step 3: Cross multiply
    289,374.20x = 433,715.70 × 120,894.20
  4. Step 4: Simplify right side
    289,374.20x = 52,433,712,578.94
  5. Step 5: Solve for x
    x = 52,433,712,578.94/289,374.20
  6. Step 6: Final answer
    x = 181,196.92

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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.