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Finding the Fourth Proportional to 348,560.10, 522,840.15 and 278,576.10

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Solution

The fourth proportional to 348,560.10, 522,840.15 and 278,576.10 is: 417,864.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,560.10 : 522,840.15 = 278,576.10 : x
  2. Step 2: Convert to fraction form
    348,560.10/522,840.15 = 278,576.10/x
  3. Step 3: Cross multiply
    348,560.10x = 522,840.15 × 278,576.10
  4. Step 4: Simplify right side
    348,560.10x = 145,650,769,910.42
  5. Step 5: Solve for x
    x = 145,650,769,910.42/348,560.10
  6. Step 6: Final answer
    x = 417,864.15

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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.