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Finding the Fourth Proportional to 520,090.18, 780,162 and 146,142.34

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Solution

The fourth proportional to 520,090.18, 780,162 and 146,142.34 is: 219,221.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,090.18 : 780,162 = 146,142.34 : x
  2. Step 2: Convert to fraction form
    520,090.18/780,162 = 146,142.34/x
  3. Step 3: Cross multiply
    520,090.18x = 780,162 × 146,142.34
  4. Step 4: Simplify right side
    520,090.18x = 114,014,700,259.08
  5. Step 5: Solve for x
    x = 114,014,700,259.08/520,090.18
  6. Step 6: Final answer
    x = 219,221.02

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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.