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Finding the Fourth Proportional to 520,237.91, 780,419.39 and 183,208.90

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Solution

The fourth proportional to 520,237.91, 780,419.39 and 183,208.90 is: 274,835.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,237.91 : 780,419.39 = 183,208.90 : x
  2. Step 2: Convert to fraction form
    520,237.91/780,419.39 = 183,208.90/x
  3. Step 3: Cross multiply
    520,237.91x = 780,419.39 × 183,208.90
  4. Step 4: Simplify right side
    520,237.91x = 142,979,777,980.57
  5. Step 5: Solve for x
    x = 142,979,777,980.57/520,237.91
  6. Step 6: Final answer
    x = 274,835.37

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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.