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Finding the Fourth Proportional to 434,638.80, 651,763.80 and 168,310.80

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Solution

The fourth proportional to 434,638.80, 651,763.80 and 168,310.80 is: 252,390.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,638.80 : 651,763.80 = 168,310.80 : x
  2. Step 2: Convert to fraction form
    434,638.80/651,763.80 = 168,310.80/x
  3. Step 3: Cross multiply
    434,638.80x = 651,763.80 × 168,310.80
  4. Step 4: Simplify right side
    434,638.80x = 109,698,886,589.04
  5. Step 5: Solve for x
    x = 109,698,886,589.04/434,638.80
  6. Step 6: Final answer
    x = 252,390.92

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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.