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Finding the Fourth Proportional to 425,735.40, 637,786.60 and 238,878.12

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Solution

The fourth proportional to 425,735.40, 637,786.60 and 238,878.12 is: 357,859.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,735.40 : 637,786.60 = 238,878.12 : x
  2. Step 2: Convert to fraction form
    425,735.40/637,786.60 = 238,878.12/x
  3. Step 3: Cross multiply
    425,735.40x = 637,786.60 × 238,878.12
  4. Step 4: Simplify right side
    425,735.40x = 152,353,263,969.19
  5. Step 5: Solve for x
    x = 152,353,263,969.19/425,735.40
  6. Step 6: Final answer
    x = 357,859.05

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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.