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Finding the Fourth Proportional to 369,421.57, 509,558.92 and 254,705.05

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Solution

The fourth proportional to 369,421.57, 509,558.92 and 254,705.05 is: 351,325.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,421.57 : 509,558.92 = 254,705.05 : x
  2. Step 2: Convert to fraction form
    369,421.57/509,558.92 = 254,705.05/x
  3. Step 3: Cross multiply
    369,421.57x = 509,558.92 × 254,705.05
  4. Step 4: Simplify right side
    369,421.57x = 129,787,230,196.55
  5. Step 5: Solve for x
    x = 129,787,230,196.55/369,421.57
  6. Step 6: Final answer
    x = 351,325.53

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.