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Finding the Fourth Proportional to 330,661.60, 495,117.60 and 260,094.40

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Solution

The fourth proportional to 330,661.60, 495,117.60 and 260,094.40 is: 389,453.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,661.60 : 495,117.60 = 260,094.40 : x
  2. Step 2: Convert to fraction form
    330,661.60/495,117.60 = 260,094.40/x
  3. Step 3: Cross multiply
    330,661.60x = 495,117.60 × 260,094.40
  4. Step 4: Simplify right side
    330,661.60x = 128,777,315,101.44
  5. Step 5: Solve for x
    x = 128,777,315,101.44/330,661.60
  6. Step 6: Final answer
    x = 389,453.49

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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.