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Finding the Fourth Proportional to 520,051.60, 780,077.40 and 146,074.60

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Solution

The fourth proportional to 520,051.60, 780,077.40 and 146,074.60 is: 219,111.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,051.60 : 780,077.40 = 146,074.60 : x
  2. Step 2: Convert to fraction form
    520,051.60/780,077.40 = 146,074.60/x
  3. Step 3: Cross multiply
    520,051.60x = 780,077.40 × 146,074.60
  4. Step 4: Simplify right side
    520,051.60x = 113,949,494,174.04
  5. Step 5: Solve for x
    x = 113,949,494,174.04/520,051.60
  6. Step 6: Final answer
    x = 219,111.90

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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.