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Finding the Fourth Proportional to 238,878.57, 358,330.41 and 61,386.78

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Solution

The fourth proportional to 238,878.57, 358,330.41 and 61,386.78 is: 92,083.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,878.57 : 358,330.41 = 61,386.78 : x
  2. Step 2: Convert to fraction form
    238,878.57/358,330.41 = 61,386.78/x
  3. Step 3: Cross multiply
    238,878.57x = 358,330.41 × 61,386.78
  4. Step 4: Simplify right side
    238,878.57x = 21,996,750,045.98
  5. Step 5: Solve for x
    x = 21,996,750,045.98/238,878.57
  6. Step 6: Final answer
    x = 92,083.40

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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.