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Finding the Fourth Proportional to 289,363.02, 434,040 and 79,000.32

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Solution

The fourth proportional to 289,363.02, 434,040 and 79,000.32 is: 118,499.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,363.02 : 434,040 = 79,000.32 : x
  2. Step 2: Convert to fraction form
    289,363.02/434,040 = 79,000.32/x
  3. Step 3: Cross multiply
    289,363.02x = 434,040 × 79,000.32
  4. Step 4: Simplify right side
    289,363.02x = 34,289,298,892.80
  5. Step 5: Solve for x
    x = 34,289,298,892.80/289,363.02
  6. Step 6: Final answer
    x = 118,499.24

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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.