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Finding the Fourth Proportional to 424,859.56, 637,393.02 and 129,371.56

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Solution

The fourth proportional to 424,859.56, 637,393.02 and 129,371.56 is: 194,088.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,859.56 : 637,393.02 = 129,371.56 : x
  2. Step 2: Convert to fraction form
    424,859.56/637,393.02 = 129,371.56/x
  3. Step 3: Cross multiply
    424,859.56x = 637,393.02 × 129,371.56
  4. Step 4: Simplify right side
    424,859.56x = 82,460,529,330.51
  5. Step 5: Solve for x
    x = 82,460,529,330.51/424,859.56
  6. Step 6: Final answer
    x = 194,088.91

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1.5x scale

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.