Home / 370,669.77-511,518.73-209,519.17

Finding the Fourth Proportional to 370,669.77, 511,518.73 and 209,519.17

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Solution

The fourth proportional to 370,669.77, 511,518.73 and 209,519.17 is: 289,133.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,669.77 : 511,518.73 = 209,519.17 : x
  2. Step 2: Convert to fraction form
    370,669.77/511,518.73 = 209,519.17/x
  3. Step 3: Cross multiply
    370,669.77x = 511,518.73 × 209,519.17
  4. Step 4: Simplify right side
    370,669.77x = 107,172,979,749.05
  5. Step 5: Solve for x
    x = 107,172,979,749.05/370,669.77
  6. Step 6: Final answer
    x = 289,133.32

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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.