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Finding the Fourth Proportional to 245,829.80, 368,598.90 and 127,731.80

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Solution

The fourth proportional to 245,829.80, 368,598.90 and 127,731.80 is: 191,521.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,829.80 : 368,598.90 = 127,731.80 : x
  2. Step 2: Convert to fraction form
    245,829.80/368,598.90 = 127,731.80/x
  3. Step 3: Cross multiply
    245,829.80x = 368,598.90 × 127,731.80
  4. Step 4: Simplify right side
    245,829.80x = 47,081,800,975.02
  5. Step 5: Solve for x
    x = 47,081,800,975.02/245,829.80
  6. Step 6: Final answer
    x = 191,521.94

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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.