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Finding the Fourth Proportional to 425,627.40, 638,441.10 and 248,334.60

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Solution

The fourth proportional to 425,627.40, 638,441.10 and 248,334.60 is: 372,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,627.40 : 638,441.10 = 248,334.60 : x
  2. Step 2: Convert to fraction form
    425,627.40/638,441.10 = 248,334.60/x
  3. Step 3: Cross multiply
    425,627.40x = 638,441.10 × 248,334.60
  4. Step 4: Simplify right side
    425,627.40x = 158,547,015,192.06
  5. Step 5: Solve for x
    x = 158,547,015,192.06/425,627.40
  6. Step 6: Final answer
    x = 372,501.90

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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.