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Finding the Fourth Proportional to 298,705.21, 448,140.85 and 130,240.26

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Solution

The fourth proportional to 298,705.21, 448,140.85 and 130,240.26 is: 195,396.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,705.21 : 448,140.85 = 130,240.26 : x
  2. Step 2: Convert to fraction form
    298,705.21/448,140.85 = 130,240.26/x
  3. Step 3: Cross multiply
    298,705.21x = 448,140.85 × 130,240.26
  4. Step 4: Simplify right side
    298,705.21x = 58,365,980,495.02
  5. Step 5: Solve for x
    x = 58,365,980,495.02/298,705.21
  6. Step 6: Final answer
    x = 195,396.60

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1.5x scale

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.