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Finding the Fourth Proportional to 282,699.88, 390,119.26 and 153,635.29

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Solution

The fourth proportional to 282,699.88, 390,119.26 and 153,635.29 is: 212,013.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,699.88 : 390,119.26 = 153,635.29 : x
  2. Step 2: Convert to fraction form
    282,699.88/390,119.26 = 153,635.29/x
  3. Step 3: Cross multiply
    282,699.88x = 390,119.26 × 153,635.29
  4. Step 4: Simplify right side
    282,699.88x = 59,936,085,644.69
  5. Step 5: Solve for x
    x = 59,936,085,644.69/282,699.88
  6. Step 6: Final answer
    x = 212,013.13

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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.