Home / 211,928.74-292,292.50-139,406.11

Finding the Fourth Proportional to 211,928.74, 292,292.50 and 139,406.11

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Solution

The fourth proportional to 211,928.74, 292,292.50 and 139,406.11 is: 192,269.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,928.74 : 292,292.50 = 139,406.11 : x
  2. Step 2: Convert to fraction form
    211,928.74/292,292.50 = 139,406.11/x
  3. Step 3: Cross multiply
    211,928.74x = 292,292.50 × 139,406.11
  4. Step 4: Simplify right side
    211,928.74x = 40,747,360,407.18
  5. Step 5: Solve for x
    x = 40,747,360,407.18/211,928.74
  6. Step 6: Final answer
    x = 192,269.16

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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.