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Finding the Fourth Proportional to 383,331.95, 528,639.29 and 302,951.50

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Solution

The fourth proportional to 383,331.95, 528,639.29 and 302,951.50 is: 417,789.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,331.95 : 528,639.29 = 302,951.50 : x
  2. Step 2: Convert to fraction form
    383,331.95/528,639.29 = 302,951.50/x
  3. Step 3: Cross multiply
    383,331.95x = 528,639.29 × 302,951.50
  4. Step 4: Simplify right side
    383,331.95x = 160,152,065,864.44
  5. Step 5: Solve for x
    x = 160,152,065,864.44/383,331.95
  6. Step 6: Final answer
    x = 417,789.51

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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.