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Finding the Fourth Proportional to 358,637.68, 494,921.40 and 215,400.16

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Solution

The fourth proportional to 358,637.68, 494,921.40 and 215,400.16 is: 297,253.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,637.68 : 494,921.40 = 215,400.16 : x
  2. Step 2: Convert to fraction form
    358,637.68/494,921.40 = 215,400.16/x
  3. Step 3: Cross multiply
    358,637.68x = 494,921.40 × 215,400.16
  4. Step 4: Simplify right side
    358,637.68x = 106,606,148,747.42
  5. Step 5: Solve for x
    x = 106,606,148,747.42/358,637.68
  6. Step 6: Final answer
    x = 297,253.06

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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.