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Finding the Fourth Proportional to 436,411.70, 654,617.55 and 155,938.10

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Solution

The fourth proportional to 436,411.70, 654,617.55 and 155,938.10 is: 233,907.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,411.70 : 654,617.55 = 155,938.10 : x
  2. Step 2: Convert to fraction form
    436,411.70/654,617.55 = 155,938.10/x
  3. Step 3: Cross multiply
    436,411.70x = 654,617.55 × 155,938.10
  4. Step 4: Simplify right side
    436,411.70x = 102,079,816,973.66
  5. Step 5: Solve for x
    x = 102,079,816,973.66/436,411.70
  6. Step 6: Final answer
    x = 233,907.15

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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.