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Finding the Fourth Proportional to 508,738.80, 763,108.20 and 153,807.60

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Solution

The fourth proportional to 508,738.80, 763,108.20 and 153,807.60 is: 230,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,738.80 : 763,108.20 = 153,807.60 : x
  2. Step 2: Convert to fraction form
    508,738.80/763,108.20 = 153,807.60/x
  3. Step 3: Cross multiply
    508,738.80x = 763,108.20 × 153,807.60
  4. Step 4: Simplify right side
    508,738.80x = 117,371,840,782.32
  5. Step 5: Solve for x
    x = 117,371,840,782.32/508,738.80
  6. Step 6: Final answer
    x = 230,711.40

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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.