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Finding the Fourth Proportional to 383,505.90, 529,275.59 and 286,541.52

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Solution

The fourth proportional to 383,505.90, 529,275.59 and 286,541.52 is: 395,455.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,505.90 : 529,275.59 = 286,541.52 : x
  2. Step 2: Convert to fraction form
    383,505.90/529,275.59 = 286,541.52/x
  3. Step 3: Cross multiply
    383,505.90x = 529,275.59 × 286,541.52
  4. Step 4: Simplify right side
    383,505.90x = 151,659,432,057.50
  5. Step 5: Solve for x
    x = 151,659,432,057.50/383,505.90
  6. Step 6: Final answer
    x = 395,455.28

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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.