Home / 390,292.37-538,406.16-261,236.33

Finding the Fourth Proportional to 390,292.37, 538,406.16 and 261,236.33

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Solution

The fourth proportional to 390,292.37, 538,406.16 and 261,236.33 is: 360,374.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,292.37 : 538,406.16 = 261,236.33 : x
  2. Step 2: Convert to fraction form
    390,292.37/538,406.16 = 261,236.33/x
  3. Step 3: Cross multiply
    390,292.37x = 538,406.16 × 261,236.33
  4. Step 4: Simplify right side
    390,292.37x = 140,651,249,287.79
  5. Step 5: Solve for x
    x = 140,651,249,287.79/390,292.37
  6. Step 6: Final answer
    x = 360,374.07

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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.