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Finding the Fourth Proportional to 228,328.90, 320,360.30 and 228,328.90

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Solution

The fourth proportional to 228,328.90, 320,360.30 and 228,328.90 is: 320,360.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,328.90 : 320,360.30 = 228,328.90 : x
  2. Step 2: Convert to fraction form
    228,328.90/320,360.30 = 228,328.90/x
  3. Step 3: Cross multiply
    228,328.90x = 320,360.30 × 228,328.90
  4. Step 4: Simplify right side
    228,328.90x = 73,147,514,902.67
  5. Step 5: Solve for x
    x = 73,147,514,902.67/228,328.90
  6. Step 6: Final answer
    x = 320,360.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.