Home / 305,519.04-458,329.32-128,039.40

Finding the Fourth Proportional to 305,519.04, 458,329.32 and 128,039.40

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Solution

The fourth proportional to 305,519.04, 458,329.32 and 128,039.40 is: 192,080.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,519.04 : 458,329.32 = 128,039.40 : x
  2. Step 2: Convert to fraction form
    305,519.04/458,329.32 = 128,039.40/x
  3. Step 3: Cross multiply
    305,519.04x = 458,329.32 × 128,039.40
  4. Step 4: Simplify right side
    305,519.04x = 58,684,211,135.21
  5. Step 5: Solve for x
    x = 58,684,211,135.21/305,519.04
  6. Step 6: Final answer
    x = 192,080.37

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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.