Home / 306,639.02-423,109.17-281,835.32

Finding the Fourth Proportional to 306,639.02, 423,109.17 and 281,835.32

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Solution

The fourth proportional to 306,639.02, 423,109.17 and 281,835.32 is: 388,884.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,639.02 : 423,109.17 = 281,835.32 : x
  2. Step 2: Convert to fraction form
    306,639.02/423,109.17 = 281,835.32/x
  3. Step 3: Cross multiply
    306,639.02x = 423,109.17 × 281,835.32
  4. Step 4: Simplify right side
    306,639.02x = 119,247,108,321.88
  5. Step 5: Solve for x
    x = 119,247,108,321.88/306,639.02
  6. Step 6: Final answer
    x = 388,884.33

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1.5x scale

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.