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Finding the Fourth Proportional to 236,680.58, 355,024.01 and 78,909.08

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Solution

The fourth proportional to 236,680.58, 355,024.01 and 78,909.08 is: 118,364.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,680.58 : 355,024.01 = 78,909.08 : x
  2. Step 2: Convert to fraction form
    236,680.58/355,024.01 = 78,909.08/x
  3. Step 3: Cross multiply
    236,680.58x = 355,024.01 × 78,909.08
  4. Step 4: Simplify right side
    236,680.58x = 28,014,617,612.47
  5. Step 5: Solve for x
    x = 28,014,617,612.47/236,680.58
  6. Step 6: Final answer
    x = 118,364.67

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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.