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Finding the Fourth Proportional to 306,465.60, 458,661.60 and 269,140.80

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Solution

The fourth proportional to 306,465.60, 458,661.60 and 269,140.80 is: 402,800.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,465.60 : 458,661.60 = 269,140.80 : x
  2. Step 2: Convert to fraction form
    306,465.60/458,661.60 = 269,140.80/x
  3. Step 3: Cross multiply
    306,465.60x = 458,661.60 × 269,140.80
  4. Step 4: Simplify right side
    306,465.60x = 123,444,549,953.28
  5. Step 5: Solve for x
    x = 123,444,549,953.28/306,465.60
  6. Step 6: Final answer
    x = 402,800.67

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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.