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Finding the Fourth Proportional to 450,265.70, 621,400.41 and 256,678.03

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Solution

The fourth proportional to 450,265.70, 621,400.41 and 256,678.03 is: 354,234.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,265.70 : 621,400.41 = 256,678.03 : x
  2. Step 2: Convert to fraction form
    450,265.70/621,400.41 = 256,678.03/x
  3. Step 3: Cross multiply
    450,265.70x = 621,400.41 × 256,678.03
  4. Step 4: Simplify right side
    450,265.70x = 159,499,833,856.74
  5. Step 5: Solve for x
    x = 159,499,833,856.74/450,265.70
  6. Step 6: Final answer
    x = 354,234.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.