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Finding the Fourth Proportional to 425,485.94, 638,339.63 and 159,267.02

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Solution

The fourth proportional to 425,485.94, 638,339.63 and 159,267.02 is: 238,941.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,485.94 : 638,339.63 = 159,267.02 : x
  2. Step 2: Convert to fraction form
    425,485.94/638,339.63 = 159,267.02/x
  3. Step 3: Cross multiply
    425,485.94x = 638,339.63 × 159,267.02
  4. Step 4: Simplify right side
    425,485.94x = 101,666,446,629.97
  5. Step 5: Solve for x
    x = 101,666,446,629.97/425,485.94
  6. Step 6: Final answer
    x = 238,941.97

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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.