Home / 380,612.76-525,238.38-210,848.28

Finding the Fourth Proportional to 380,612.76, 525,238.38 and 210,848.28

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Solution

The fourth proportional to 380,612.76, 525,238.38 and 210,848.28 is: 290,966.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,612.76 : 525,238.38 = 210,848.28 : x
  2. Step 2: Convert to fraction form
    380,612.76/525,238.38 = 210,848.28/x
  3. Step 3: Cross multiply
    380,612.76x = 525,238.38 × 210,848.28
  4. Step 4: Simplify right side
    380,612.76x = 110,745,609,012.99
  5. Step 5: Solve for x
    x = 110,745,609,012.99/380,612.76
  6. Step 6: Final answer
    x = 290,966.62

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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.