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Finding the Fourth Proportional to 269,929.42, 404,852.63 and 90,018

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Solution

The fourth proportional to 269,929.42, 404,852.63 and 90,018 is: 135,013.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,929.42 : 404,852.63 = 90,018 : x
  2. Step 2: Convert to fraction form
    269,929.42/404,852.63 = 90,018/x
  3. Step 3: Cross multiply
    269,929.42x = 404,852.63 × 90,018
  4. Step 4: Simplify right side
    269,929.42x = 36,444,024,047.34
  5. Step 5: Solve for x
    x = 36,444,024,047.34/269,929.42
  6. Step 6: Final answer
    x = 135,013.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.