Home / 380,419.77-524,995.12-210,653.90

Finding the Fourth Proportional to 380,419.77, 524,995.12 and 210,653.90

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Solution

The fourth proportional to 380,419.77, 524,995.12 and 210,653.90 is: 290,711.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,419.77 : 524,995.12 = 210,653.90 : x
  2. Step 2: Convert to fraction form
    380,419.77/524,995.12 = 210,653.90/x
  3. Step 3: Cross multiply
    380,419.77x = 524,995.12 × 210,653.90
  4. Step 4: Simplify right side
    380,419.77x = 110,592,269,508.97
  5. Step 5: Solve for x
    x = 110,592,269,508.97/380,419.77
  6. Step 6: Final answer
    x = 290,711.15

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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.