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Finding the Fourth Proportional to 425,223.94, 637,819.93 and 105,376.74

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Solution

The fourth proportional to 425,223.94, 637,819.93 and 105,376.74 is: 158,061.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,223.94 : 637,819.93 = 105,376.74 : x
  2. Step 2: Convert to fraction form
    425,223.94/637,819.93 = 105,376.74/x
  3. Step 3: Cross multiply
    425,223.94x = 637,819.93 × 105,376.74
  4. Step 4: Simplify right side
    425,223.94x = 67,211,384,930.43
  5. Step 5: Solve for x
    x = 67,211,384,930.43/425,223.94
  6. Step 6: Final answer
    x = 158,061.15

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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.