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Finding the Fourth Proportional to 493,059.40, 739,005.90 and 256,280.20

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Solution

The fourth proportional to 493,059.40, 739,005.90 and 256,280.20 is: 384,117.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,059.40 : 739,005.90 = 256,280.20 : x
  2. Step 2: Convert to fraction form
    493,059.40/739,005.90 = 256,280.20/x
  3. Step 3: Cross multiply
    493,059.40x = 739,005.90 × 256,280.20
  4. Step 4: Simplify right side
    493,059.40x = 189,392,579,853.18
  5. Step 5: Solve for x
    x = 189,392,579,853.18/493,059.40
  6. Step 6: Final answer
    x = 384,117.17

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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.