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Finding the Fourth Proportional to 259,508.80, 389,263.20 and 93,313.60

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Solution

The fourth proportional to 259,508.80, 389,263.20 and 93,313.60 is: 139,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,508.80 : 389,263.20 = 93,313.60 : x
  2. Step 2: Convert to fraction form
    259,508.80/389,263.20 = 93,313.60/x
  3. Step 3: Cross multiply
    259,508.80x = 389,263.20 × 93,313.60
  4. Step 4: Simplify right side
    259,508.80x = 36,323,550,539.52
  5. Step 5: Solve for x
    x = 36,323,550,539.52/259,508.80
  6. Step 6: Final answer
    x = 139,970.40

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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.