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Finding the Fourth Proportional to 286,576.80, 429,865.20 and 274,442.40

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Solution

The fourth proportional to 286,576.80, 429,865.20 and 274,442.40 is: 411,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,576.80 : 429,865.20 = 274,442.40 : x
  2. Step 2: Convert to fraction form
    286,576.80/429,865.20 = 274,442.40/x
  3. Step 3: Cross multiply
    286,576.80x = 429,865.20 × 274,442.40
  4. Step 4: Simplify right side
    286,576.80x = 117,973,237,164.48
  5. Step 5: Solve for x
    x = 117,973,237,164.48/286,576.80
  6. Step 6: Final answer
    x = 411,663.60

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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.