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Finding the Fourth Proportional to 303,434.80, 424,021.40 and 303,434.80

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Solution

The fourth proportional to 303,434.80, 424,021.40 and 303,434.80 is: 424,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,434.80 : 424,021.40 = 303,434.80 : x
  2. Step 2: Convert to fraction form
    303,434.80/424,021.40 = 303,434.80/x
  3. Step 3: Cross multiply
    303,434.80x = 424,021.40 × 303,434.80
  4. Step 4: Simplify right side
    303,434.80x = 128,662,848,704.72
  5. Step 5: Solve for x
    x = 128,662,848,704.72/303,434.80
  6. Step 6: Final answer
    x = 424,021.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.