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Finding the Fourth Proportional to 423,037.54, 634,240.69 and 254,518.38

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Solution

The fourth proportional to 423,037.54, 634,240.69 and 254,518.38 is: 381,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,037.54 : 634,240.69 = 254,518.38 : x
  2. Step 2: Convert to fraction form
    423,037.54/634,240.69 = 254,518.38/x
  3. Step 3: Cross multiply
    423,037.54x = 634,240.69 × 254,518.38
  4. Step 4: Simplify right side
    423,037.54x = 161,425,912,948.88
  5. Step 5: Solve for x
    x = 161,425,912,948.88/423,037.54
  6. Step 6: Final answer
    x = 381,587.68

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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.