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Finding the Fourth Proportional to 379,907.44, 569,578.02 and 127,038.40

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Solution

The fourth proportional to 379,907.44, 569,578.02 and 127,038.40 is: 190,462.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,907.44 : 569,578.02 = 127,038.40 : x
  2. Step 2: Convert to fraction form
    379,907.44/569,578.02 = 127,038.40/x
  3. Step 3: Cross multiply
    379,907.44x = 569,578.02 × 127,038.40
  4. Step 4: Simplify right side
    379,907.44x = 72,358,280,335.97
  5. Step 5: Solve for x
    x = 72,358,280,335.97/379,907.44
  6. Step 6: Final answer
    x = 190,462.92

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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.