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Finding the Fourth Proportional to 353,638.83, 488,032.11 and 217,751.16

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Solution

The fourth proportional to 353,638.83, 488,032.11 and 217,751.16 is: 300,503.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,638.83 : 488,032.11 = 217,751.16 : x
  2. Step 2: Convert to fraction form
    353,638.83/488,032.11 = 217,751.16/x
  3. Step 3: Cross multiply
    353,638.83x = 488,032.11 × 217,751.16
  4. Step 4: Simplify right side
    353,638.83x = 106,269,558,069.75
  5. Step 5: Solve for x
    x = 106,269,558,069.75/353,638.83
  6. Step 6: Final answer
    x = 300,503.08

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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.