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Finding the Fourth Proportional to 323,856.10, 485,784.15 and 256,204.90

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Solution

The fourth proportional to 323,856.10, 485,784.15 and 256,204.90 is: 384,307.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,856.10 : 485,784.15 = 256,204.90 : x
  2. Step 2: Convert to fraction form
    323,856.10/485,784.15 = 256,204.90/x
  3. Step 3: Cross multiply
    323,856.10x = 485,784.15 × 256,204.90
  4. Step 4: Simplify right side
    323,856.10x = 124,460,279,572.34
  5. Step 5: Solve for x
    x = 124,460,279,572.34/323,856.10
  6. Step 6: Final answer
    x = 384,307.35

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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.