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Finding the Fourth Proportional to 520,215.27, 780,322.91 and 146,238.27

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Solution

The fourth proportional to 520,215.27, 780,322.91 and 146,238.27 is: 219,357.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,215.27 : 780,322.91 = 146,238.27 : x
  2. Step 2: Convert to fraction form
    520,215.27/780,322.91 = 146,238.27/x
  3. Step 3: Cross multiply
    520,215.27x = 780,322.91 × 146,238.27
  4. Step 4: Simplify right side
    520,215.27x = 114,113,071,668.57
  5. Step 5: Solve for x
    x = 114,113,071,668.57/520,215.27
  6. Step 6: Final answer
    x = 219,357.41

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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.