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Finding the Fourth Proportional to 380,345.59, 524,912.12 and 210,579.71

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Solution

The fourth proportional to 380,345.59, 524,912.12 and 210,579.71 is: 290,619.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,345.59 : 524,912.12 = 210,579.71 : x
  2. Step 2: Convert to fraction form
    380,345.59/524,912.12 = 210,579.71/x
  3. Step 3: Cross multiply
    380,345.59x = 524,912.12 × 210,579.71
  4. Step 4: Simplify right side
    380,345.59x = 110,535,843,054.14
  5. Step 5: Solve for x
    x = 110,535,843,054.14/380,345.59
  6. Step 6: Final answer
    x = 290,619.50

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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.