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Finding the Fourth Proportional to 358,411.79, 494,528.85 and 207,421.31

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Solution

The fourth proportional to 358,411.79, 494,528.85 and 207,421.31 is: 286,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,411.79 : 494,528.85 = 207,421.31 : x
  2. Step 2: Convert to fraction form
    358,411.79/494,528.85 = 207,421.31/x
  3. Step 3: Cross multiply
    358,411.79x = 494,528.85 × 207,421.31
  4. Step 4: Simplify right side
    358,411.79x = 102,575,823,136.12
  5. Step 5: Solve for x
    x = 102,575,823,136.12/358,411.79
  6. Step 6: Final answer
    x = 286,195.45

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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.