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Finding the Fourth Proportional to 496,678.31, 685,547.87 and 305,851.62

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Solution

The fourth proportional to 496,678.31, 685,547.87 and 305,851.62 is: 422,156.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,678.31 : 685,547.87 = 305,851.62 : x
  2. Step 2: Convert to fraction form
    496,678.31/685,547.87 = 305,851.62/x
  3. Step 3: Cross multiply
    496,678.31x = 685,547.87 × 305,851.62
  4. Step 4: Simplify right side
    496,678.31x = 209,675,925,097.79
  5. Step 5: Solve for x
    x = 209,675,925,097.79/496,678.31
  6. Step 6: Final answer
    x = 422,156.40

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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.