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Finding the Fourth Proportional to 520,237.55, 780,408.30 and 141,164.30

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Solution

The fourth proportional to 520,237.55, 780,408.30 and 141,164.30 is: 211,760.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,237.55 : 780,408.30 = 141,164.30 : x
  2. Step 2: Convert to fraction form
    520,237.55/780,408.30 = 141,164.30/x
  3. Step 3: Cross multiply
    520,237.55x = 780,408.30 × 141,164.30
  4. Step 4: Simplify right side
    520,237.55x = 110,165,791,383.69
  5. Step 5: Solve for x
    x = 110,165,791,383.69/520,237.55
  6. Step 6: Final answer
    x = 211,760.55

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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.