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Finding the Fourth Proportional to 362,038.58, 543,455.15 and 287,636.98

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Solution

The fourth proportional to 362,038.58, 543,455.15 and 287,636.98 is: 431,771.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,038.58 : 543,455.15 = 287,636.98 : x
  2. Step 2: Convert to fraction form
    362,038.58/543,455.15 = 287,636.98/x
  3. Step 3: Cross multiply
    362,038.58x = 543,455.15 × 287,636.98
  4. Step 4: Simplify right side
    362,038.58x = 156,317,798,111.45
  5. Step 5: Solve for x
    x = 156,317,798,111.45/362,038.58
  6. Step 6: Final answer
    x = 431,771.11

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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.