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Finding the Fourth Proportional to 404,389.84, 606,656.14 and 138,087.96

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Solution

The fourth proportional to 404,389.84, 606,656.14 and 138,087.96 is: 207,156.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,389.84 : 606,656.14 = 138,087.96 : x
  2. Step 2: Convert to fraction form
    404,389.84/606,656.14 = 138,087.96/x
  3. Step 3: Cross multiply
    404,389.84x = 606,656.14 × 138,087.96
  4. Step 4: Simplify right side
    404,389.84x = 83,771,908,794.07
  5. Step 5: Solve for x
    x = 83,771,908,794.07/404,389.84
  6. Step 6: Final answer
    x = 207,156.31

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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.