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Finding the Fourth Proportional to 368,680.65, 508,507.65 and 278,040.42

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Solution

The fourth proportional to 368,680.65, 508,507.65 and 278,040.42 is: 383,490.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,680.65 : 508,507.65 = 278,040.42 : x
  2. Step 2: Convert to fraction form
    368,680.65/508,507.65 = 278,040.42/x
  3. Step 3: Cross multiply
    368,680.65x = 508,507.65 × 278,040.42
  4. Step 4: Simplify right side
    368,680.65x = 141,385,680,579.21
  5. Step 5: Solve for x
    x = 141,385,680,579.21/368,680.65
  6. Step 6: Final answer
    x = 383,490.92

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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.