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Finding the Fourth Proportional to 280,035.36, 420,052.32 and 69,673.44

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Solution

The fourth proportional to 280,035.36, 420,052.32 and 69,673.44 is: 104,509.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,035.36 : 420,052.32 = 69,673.44 : x
  2. Step 2: Convert to fraction form
    280,035.36/420,052.32 = 69,673.44/x
  3. Step 3: Cross multiply
    280,035.36x = 420,052.32 × 69,673.44
  4. Step 4: Simplify right side
    280,035.36x = 29,266,490,114.38
  5. Step 5: Solve for x
    x = 29,266,490,114.38/280,035.36
  6. Step 6: Final answer
    x = 104,509.98

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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.