Home / 265,637.13-398,573.47-139,247.21

Finding the Fourth Proportional to 265,637.13, 398,573.47 and 139,247.21

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Solution

The fourth proportional to 265,637.13, 398,573.47 and 139,247.21 is: 208,932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,637.13 : 398,573.47 = 139,247.21 : x
  2. Step 2: Convert to fraction form
    265,637.13/398,573.47 = 139,247.21/x
  3. Step 3: Cross multiply
    265,637.13x = 398,573.47 × 139,247.21
  4. Step 4: Simplify right side
    265,637.13x = 55,500,242,223.39
  5. Step 5: Solve for x
    x = 55,500,242,223.39/265,637.13
  6. Step 6: Final answer
    x = 208,932.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.