Home / 370,840.07-511,769.34-209,719.13

Finding the Fourth Proportional to 370,840.07, 511,769.34 and 209,719.13

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Solution

The fourth proportional to 370,840.07, 511,769.34 and 209,719.13 is: 289,418.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,840.07 : 511,769.34 = 209,719.13 : x
  2. Step 2: Convert to fraction form
    370,840.07/511,769.34 = 209,719.13/x
  3. Step 3: Cross multiply
    370,840.07x = 511,769.34 × 209,719.13
  4. Step 4: Simplify right side
    370,840.07x = 107,327,818,186.63
  5. Step 5: Solve for x
    x = 107,327,818,186.63/370,840.07
  6. Step 6: Final answer
    x = 289,418.07

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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.