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Finding the Fourth Proportional to 362,039.83, 543,457.03 and 287,638.23

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Solution

The fourth proportional to 362,039.83, 543,457.03 and 287,638.23 is: 431,772.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,039.83 : 543,457.03 = 287,638.23 : x
  2. Step 2: Convert to fraction form
    362,039.83/543,457.03 = 287,638.23/x
  3. Step 3: Cross multiply
    362,039.83x = 543,457.03 × 287,638.23
  4. Step 4: Simplify right side
    362,039.83x = 156,319,018,190.26
  5. Step 5: Solve for x
    x = 156,319,018,190.26/362,039.83
  6. Step 6: Final answer
    x = 431,772.99

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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.