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Finding the Fourth Proportional to 368,772.30, 507,834.63 and 320,352.12

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Solution

The fourth proportional to 368,772.30, 507,834.63 and 320,352.12 is: 441,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,772.30 : 507,834.63 = 320,352.12 : x
  2. Step 2: Convert to fraction form
    368,772.30/507,834.63 = 320,352.12/x
  3. Step 3: Cross multiply
    368,772.30x = 507,834.63 × 320,352.12
  4. Step 4: Simplify right side
    368,772.30x = 162,685,900,329.92
  5. Step 5: Solve for x
    x = 162,685,900,329.92/368,772.30
  6. Step 6: Final answer
    x = 441,155.42

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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.