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Finding the Fourth Proportional to 289,920.60, 434,880.90 and 201,347.10

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Solution

The fourth proportional to 289,920.60, 434,880.90 and 201,347.10 is: 302,020.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,920.60 : 434,880.90 = 201,347.10 : x
  2. Step 2: Convert to fraction form
    289,920.60/434,880.90 = 201,347.10/x
  3. Step 3: Cross multiply
    289,920.60x = 434,880.90 × 201,347.10
  4. Step 4: Simplify right side
    289,920.60x = 87,562,008,060.39
  5. Step 5: Solve for x
    x = 87,562,008,060.39/289,920.60
  6. Step 6: Final answer
    x = 302,020.65

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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.