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Finding the Fourth Proportional to 286,568.80, 429,853.20 and 274,434.40

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Solution

The fourth proportional to 286,568.80, 429,853.20 and 274,434.40 is: 411,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,568.80 : 429,853.20 = 274,434.40 : x
  2. Step 2: Convert to fraction form
    286,568.80/429,853.20 = 274,434.40/x
  3. Step 3: Cross multiply
    286,568.80x = 429,853.20 × 274,434.40
  4. Step 4: Simplify right side
    286,568.80x = 117,966,505,030.08
  5. Step 5: Solve for x
    x = 117,966,505,030.08/286,568.80
  6. Step 6: Final answer
    x = 411,651.60

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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.