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Finding the Fourth Proportional to 508,717.20, 763,075.80 and 153,694.20

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Solution

The fourth proportional to 508,717.20, 763,075.80 and 153,694.20 is: 230,541.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,717.20 : 763,075.80 = 153,694.20 : x
  2. Step 2: Convert to fraction form
    508,717.20/763,075.80 = 153,694.20/x
  3. Step 3: Cross multiply
    508,717.20x = 763,075.80 × 153,694.20
  4. Step 4: Simplify right side
    508,717.20x = 117,280,324,620.36
  5. Step 5: Solve for x
    x = 117,280,324,620.36/508,717.20
  6. Step 6: Final answer
    x = 230,541.30

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Similar ratio
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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.