Home / 380,653.56-525,279.15-210,875.40

Finding the Fourth Proportional to 380,653.56, 525,279.15 and 210,875.40

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Solution

The fourth proportional to 380,653.56, 525,279.15 and 210,875.40 is: 290,995.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,653.56 : 525,279.15 = 210,875.40 : x
  2. Step 2: Convert to fraction form
    380,653.56/525,279.15 = 210,875.40/x
  3. Step 3: Cross multiply
    380,653.56x = 525,279.15 × 210,875.40
  4. Step 4: Simplify right side
    380,653.56x = 110,768,450,867.91
  5. Step 5: Solve for x
    x = 110,768,450,867.91/380,653.56
  6. Step 6: Final answer
    x = 290,995.44

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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.