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Finding the Fourth Proportional to 520,200.03, 780,300.05 and 146,223.03

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Solution

The fourth proportional to 520,200.03, 780,300.05 and 146,223.03 is: 219,334.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,200.03 : 780,300.05 = 146,223.03 : x
  2. Step 2: Convert to fraction form
    520,200.03/780,300.05 = 146,223.03/x
  3. Step 3: Cross multiply
    520,200.03x = 780,300.05 × 146,223.03
  4. Step 4: Simplify right side
    520,200.03x = 114,097,838,229.97
  5. Step 5: Solve for x
    x = 114,097,838,229.97/520,200.03
  6. Step 6: Final answer
    x = 219,334.55

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Double scale
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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.