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Finding the Fourth Proportional to 329,686.20, 495,622.80 and 286,383.60

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Solution

The fourth proportional to 329,686.20, 495,622.80 and 286,383.60 is: 430,525.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,686.20 : 495,622.80 = 286,383.60 : x
  2. Step 2: Convert to fraction form
    329,686.20/495,622.80 = 286,383.60/x
  3. Step 3: Cross multiply
    329,686.20x = 495,622.80 × 286,383.60
  4. Step 4: Simplify right side
    329,686.20x = 141,938,241,706.08
  5. Step 5: Solve for x
    x = 141,938,241,706.08/329,686.20
  6. Step 6: Final answer
    x = 430,525.27

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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.