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Finding the Fourth Proportional to 520,217.77, 780,326.66 and 146,240.77

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Solution

The fourth proportional to 520,217.77, 780,326.66 and 146,240.77 is: 219,361.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,217.77 : 780,326.66 = 146,240.77 : x
  2. Step 2: Convert to fraction form
    520,217.77/780,326.66 = 146,240.77/x
  3. Step 3: Cross multiply
    520,217.77x = 780,326.66 × 146,240.77
  4. Step 4: Simplify right side
    520,217.77x = 114,115,571,609.93
  5. Step 5: Solve for x
    x = 114,115,571,609.93/520,217.77
  6. Step 6: Final answer
    x = 219,361.16

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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.