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Finding the Fourth Proportional to 487,395.73, 672,554.32 and 269,569.79

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Solution

The fourth proportional to 487,395.73, 672,554.32 and 269,569.79 is: 371,977.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,395.73 : 672,554.32 = 269,569.79 : x
  2. Step 2: Convert to fraction form
    487,395.73/672,554.32 = 269,569.79/x
  3. Step 3: Cross multiply
    487,395.73x = 672,554.32 × 269,569.79
  4. Step 4: Simplify right side
    487,395.73x = 181,300,326,805.99
  5. Step 5: Solve for x
    x = 181,300,326,805.99/487,395.73
  6. Step 6: Final answer
    x = 371,977.67

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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.