Home / 380,185.74-524,682.90-210,430.80

Finding the Fourth Proportional to 380,185.74, 524,682.90 and 210,430.80

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Solution

The fourth proportional to 380,185.74, 524,682.90 and 210,430.80 is: 290,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,185.74 : 524,682.90 = 210,430.80 : x
  2. Step 2: Convert to fraction form
    380,185.74/524,682.90 = 210,430.80/x
  3. Step 3: Cross multiply
    380,185.74x = 524,682.90 × 210,430.80
  4. Step 4: Simplify right side
    380,185.74x = 110,409,442,393.32
  5. Step 5: Solve for x
    x = 110,409,442,393.32/380,185.74
  6. Step 6: Final answer
    x = 290,409.22

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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.