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Finding the Fourth Proportional to 303,438.30, 424,026.30 and 303,438.30

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Solution

The fourth proportional to 303,438.30, 424,026.30 and 303,438.30 is: 424,026.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,438.30 : 424,026.30 = 303,438.30 : x
  2. Step 2: Convert to fraction form
    303,438.30/424,026.30 = 303,438.30/x
  3. Step 3: Cross multiply
    303,438.30x = 424,026.30 × 303,438.30
  4. Step 4: Simplify right side
    303,438.30x = 128,665,819,627.29
  5. Step 5: Solve for x
    x = 128,665,819,627.29/303,438.30
  6. Step 6: Final answer
    x = 424,026.30

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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.