Home / 380,617.62-525,269.39-210,840.81

Finding the Fourth Proportional to 380,617.62, 525,269.39 and 210,840.81

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Solution

The fourth proportional to 380,617.62, 525,269.39 and 210,840.81 is: 290,969.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,617.62 : 525,269.39 = 210,840.81 : x
  2. Step 2: Convert to fraction form
    380,617.62/525,269.39 = 210,840.81/x
  3. Step 3: Cross multiply
    380,617.62x = 525,269.39 × 210,840.81
  4. Step 4: Simplify right side
    380,617.62x = 110,748,223,655.81
  5. Step 5: Solve for x
    x = 110,748,223,655.81/380,617.62
  6. Step 6: Final answer
    x = 290,969.78

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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.