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Finding the Fourth Proportional to 239,018.78, 358,528.20 and 79,051.78

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Solution

The fourth proportional to 239,018.78, 358,528.20 and 79,051.78 is: 118,577.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,018.78 : 358,528.20 = 79,051.78 : x
  2. Step 2: Convert to fraction form
    239,018.78/358,528.20 = 79,051.78/x
  3. Step 3: Cross multiply
    239,018.78x = 358,528.20 × 79,051.78
  4. Step 4: Simplify right side
    239,018.78x = 28,342,290,597.56
  5. Step 5: Solve for x
    x = 28,342,290,597.56/239,018.78
  6. Step 6: Final answer
    x = 118,577.67

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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.