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Finding the Fourth Proportional to 368,896.66, 509,079.12 and 207,754.45

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Solution

The fourth proportional to 368,896.66, 509,079.12 and 207,754.45 is: 286,702.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,896.66 : 509,079.12 = 207,754.45 : x
  2. Step 2: Convert to fraction form
    368,896.66/509,079.12 = 207,754.45/x
  3. Step 3: Cross multiply
    368,896.66x = 509,079.12 × 207,754.45
  4. Step 4: Simplify right side
    368,896.66x = 105,763,450,036.69
  5. Step 5: Solve for x
    x = 105,763,450,036.69/368,896.66
  6. Step 6: Final answer
    x = 286,702.11

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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.