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Finding the Fourth Proportional to 245,798.34, 368,786.34 and 85,897.95

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Solution

The fourth proportional to 245,798.34, 368,786.34 and 85,897.95 is: 128,877.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,798.34 : 368,786.34 = 85,897.95 : x
  2. Step 2: Convert to fraction form
    245,798.34/368,786.34 = 85,897.95/x
  3. Step 3: Cross multiply
    245,798.34x = 368,786.34 × 85,897.95
  4. Step 4: Simplify right side
    245,798.34x = 31,677,990,594.00
  5. Step 5: Solve for x
    x = 31,677,990,594.00/245,798.34
  6. Step 6: Final answer
    x = 128,877.97

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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.