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Finding the Fourth Proportional to 236,658.32, 355,005.93 and 78,886.77

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Solution

The fourth proportional to 236,658.32, 355,005.93 and 78,886.77 is: 118,336.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,658.32 : 355,005.93 = 78,886.77 : x
  2. Step 2: Convert to fraction form
    236,658.32/355,005.93 = 78,886.77/x
  3. Step 3: Cross multiply
    236,658.32x = 355,005.93 × 78,886.77
  4. Step 4: Simplify right side
    236,658.32x = 28,005,271,148.55
  5. Step 5: Solve for x
    x = 28,005,271,148.55/236,658.32
  6. Step 6: Final answer
    x = 118,336.31

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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.