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Finding the Fourth Proportional to 425,526.37, 638,483.29 and 159,307.61

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Solution

The fourth proportional to 425,526.37, 638,483.29 and 159,307.61 is: 239,033.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,526.37 : 638,483.29 = 159,307.61 : x
  2. Step 2: Convert to fraction form
    425,526.37/638,483.29 = 159,307.61/x
  3. Step 3: Cross multiply
    425,526.37x = 638,483.29 × 159,307.61
  4. Step 4: Simplify right side
    425,526.37x = 101,715,243,364.15
  5. Step 5: Solve for x
    x = 101,715,243,364.15/425,526.37
  6. Step 6: Final answer
    x = 239,033.94

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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.