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Finding the Fourth Proportional to 529,078.60, 794,136.30 and 263,139.40

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Solution

The fourth proportional to 529,078.60, 794,136.30 and 263,139.40 is: 394,966.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,078.60 : 794,136.30 = 263,139.40 : x
  2. Step 2: Convert to fraction form
    529,078.60/794,136.30 = 263,139.40/x
  3. Step 3: Cross multiply
    529,078.60x = 794,136.30 × 263,139.40
  4. Step 4: Simplify right side
    529,078.60x = 208,968,549,500.22
  5. Step 5: Solve for x
    x = 208,968,549,500.22/529,078.60
  6. Step 6: Final answer
    x = 394,966.93

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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.