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Finding the Fourth Proportional to 239,148.90, 358,773.95 and 79,215.77

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Solution

The fourth proportional to 239,148.90, 358,773.95 and 79,215.77 is: 118,840.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,148.90 : 358,773.95 = 79,215.77 : x
  2. Step 2: Convert to fraction form
    239,148.90/358,773.95 = 79,215.77/x
  3. Step 3: Cross multiply
    239,148.90x = 358,773.95 × 79,215.77
  4. Step 4: Simplify right side
    239,148.90x = 28,420,555,206.05
  5. Step 5: Solve for x
    x = 28,420,555,206.05/239,148.90
  6. Step 6: Final answer
    x = 118,840.42

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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.