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Finding the Fourth Proportional to 511,421.85, 767,219.04 and 156,352.68

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Solution

The fourth proportional to 511,421.85, 767,219.04 and 156,352.68 is: 234,555.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,421.85 : 767,219.04 = 156,352.68 : x
  2. Step 2: Convert to fraction form
    511,421.85/767,219.04 = 156,352.68/x
  3. Step 3: Cross multiply
    511,421.85x = 767,219.04 × 156,352.68
  4. Step 4: Simplify right side
    511,421.85x = 119,956,753,051.03
  5. Step 5: Solve for x
    x = 119,956,753,051.03/511,421.85
  6. Step 6: Final answer
    x = 234,555.39

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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.