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Finding the Fourth Proportional to 300,945.54, 415,437.13 and 210,656.10

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Solution

The fourth proportional to 300,945.54, 415,437.13 and 210,656.10 is: 290,798.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,945.54 : 415,437.13 = 210,656.10 : x
  2. Step 2: Convert to fraction form
    300,945.54/415,437.13 = 210,656.10/x
  3. Step 3: Cross multiply
    300,945.54x = 415,437.13 × 210,656.10
  4. Step 4: Simplify right side
    300,945.54x = 87,514,365,600.99
  5. Step 5: Solve for x
    x = 87,514,365,600.99/300,945.54
  6. Step 6: Final answer
    x = 290,798.01

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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.