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Finding the Fourth Proportional to 286,708.55, 429,778.76 and 134,633.40

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Solution

The fourth proportional to 286,708.55, 429,778.76 and 134,633.40 is: 201,816.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,708.55 : 429,778.76 = 134,633.40 : x
  2. Step 2: Convert to fraction form
    286,708.55/429,778.76 = 134,633.40/x
  3. Step 3: Cross multiply
    286,708.55x = 429,778.76 × 134,633.40
  4. Step 4: Simplify right side
    286,708.55x = 57,862,576,259.98
  5. Step 5: Solve for x
    x = 57,862,576,259.98/286,708.55
  6. Step 6: Final answer
    x = 201,816.71

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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.