Home / 380,749.30-525,672.87-245,019.08

Finding the Fourth Proportional to 380,749.30, 525,672.87 and 245,019.08

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Solution

The fourth proportional to 380,749.30, 525,672.87 and 245,019.08 is: 338,280.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,749.30 : 525,672.87 = 245,019.08 : x
  2. Step 2: Convert to fraction form
    380,749.30/525,672.87 = 245,019.08/x
  3. Step 3: Cross multiply
    380,749.30x = 525,672.87 × 245,019.08
  4. Step 4: Simplify right side
    380,749.30x = 128,799,882,988.36
  5. Step 5: Solve for x
    x = 128,799,882,988.36/380,749.30
  6. Step 6: Final answer
    x = 338,280.03

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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.