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Finding the Fourth Proportional to 338,900.41, 508,039.56 and 117,128.89

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Solution

The fourth proportional to 338,900.41, 508,039.56 and 117,128.89 is: 175,585.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,900.41 : 508,039.56 = 117,128.89 : x
  2. Step 2: Convert to fraction form
    338,900.41/508,039.56 = 117,128.89/x
  3. Step 3: Cross multiply
    338,900.41x = 508,039.56 × 117,128.89
  4. Step 4: Simplify right side
    338,900.41x = 59,506,109,738.89
  5. Step 5: Solve for x
    x = 59,506,109,738.89/338,900.41
  6. Step 6: Final answer
    x = 175,585.83

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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.