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Finding the Fourth Proportional to 508,821.40, 763,252.85 and 129,751.96

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Solution

The fourth proportional to 508,821.40, 763,252.85 and 129,751.96 is: 194,633.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,821.40 : 763,252.85 = 129,751.96 : x
  2. Step 2: Convert to fraction form
    508,821.40/763,252.85 = 129,751.96/x
  3. Step 3: Cross multiply
    508,821.40x = 763,252.85 × 129,751.96
  4. Step 4: Simplify right side
    508,821.40x = 99,033,553,263.09
  5. Step 5: Solve for x
    x = 99,033,553,263.09/508,821.40
  6. Step 6: Final answer
    x = 194,633.23

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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.