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Finding the Fourth Proportional to 368,842.07, 509,038.56 and 215,871.14

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Solution

The fourth proportional to 368,842.07, 509,038.56 and 215,871.14 is: 297,923.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,842.07 : 509,038.56 = 215,871.14 : x
  2. Step 2: Convert to fraction form
    368,842.07/509,038.56 = 215,871.14/x
  3. Step 3: Cross multiply
    368,842.07x = 509,038.56 × 215,871.14
  4. Step 4: Simplify right side
    368,842.07x = 109,886,735,523.76
  5. Step 5: Solve for x
    x = 109,886,735,523.76/368,842.07
  6. Step 6: Final answer
    x = 297,923.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.