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Finding the Fourth Proportional to 520,210.27, 780,315.41 and 146,233.27

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Solution

The fourth proportional to 520,210.27, 780,315.41 and 146,233.27 is: 219,349.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,210.27 : 780,315.41 = 146,233.27 : x
  2. Step 2: Convert to fraction form
    520,210.27/780,315.41 = 146,233.27/x
  3. Step 3: Cross multiply
    520,210.27x = 780,315.41 × 146,233.27
  4. Step 4: Simplify right side
    520,210.27x = 114,108,074,035.69
  5. Step 5: Solve for x
    x = 114,108,074,035.69/520,210.27
  6. Step 6: Final answer
    x = 219,349.91

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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.