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Finding the Fourth Proportional to 303,381.90, 455,364.45 and 153,791.10

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Solution

The fourth proportional to 303,381.90, 455,364.45 and 153,791.10 is: 230,834.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,381.90 : 455,364.45 = 153,791.10 : x
  2. Step 2: Convert to fraction form
    303,381.90/455,364.45 = 153,791.10/x
  3. Step 3: Cross multiply
    303,381.90x = 455,364.45 × 153,791.10
  4. Step 4: Simplify right side
    303,381.90x = 70,030,999,666.40
  5. Step 5: Solve for x
    x = 70,030,999,666.40/303,381.90
  6. Step 6: Final answer
    x = 230,834.47

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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.