Home / 300,530.25-414,688.55-255,389.13

Finding the Fourth Proportional to 300,530.25, 414,688.55 and 255,389.13

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Solution

The fourth proportional to 300,530.25, 414,688.55 and 255,389.13 is: 352,400.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,530.25 : 414,688.55 = 255,389.13 : x
  2. Step 2: Convert to fraction form
    300,530.25/414,688.55 = 255,389.13/x
  3. Step 3: Cross multiply
    300,530.25x = 414,688.55 × 255,389.13
  4. Step 4: Simplify right side
    300,530.25x = 105,906,946,728.52
  5. Step 5: Solve for x
    x = 105,906,946,728.52/300,530.25
  6. Step 6: Final answer
    x = 352,400.29

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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.