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Finding the Fourth Proportional to 378,187.20, 567,280.80 and 307,328.40

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Solution

The fourth proportional to 378,187.20, 567,280.80 and 307,328.40 is: 460,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,187.20 : 567,280.80 = 307,328.40 : x
  2. Step 2: Convert to fraction form
    378,187.20/567,280.80 = 307,328.40/x
  3. Step 3: Cross multiply
    378,187.20x = 567,280.80 × 307,328.40
  4. Step 4: Simplify right side
    378,187.20x = 174,341,500,614.72
  5. Step 5: Solve for x
    x = 174,341,500,614.72/378,187.20
  6. Step 6: Final answer
    x = 460,992.60

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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.