Home / 211,862.85-292,421.64-121,271.32

Finding the Fourth Proportional to 211,862.85, 292,421.64 and 121,271.32

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Solution

The fourth proportional to 211,862.85, 292,421.64 and 121,271.32 is: 167,383.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,862.85 : 292,421.64 = 121,271.32 : x
  2. Step 2: Convert to fraction form
    211,862.85/292,421.64 = 121,271.32/x
  3. Step 3: Cross multiply
    211,862.85x = 292,421.64 × 121,271.32
  4. Step 4: Simplify right side
    211,862.85x = 35,462,358,279.36
  5. Step 5: Solve for x
    x = 35,462,358,279.36/211,862.85
  6. Step 6: Final answer
    x = 167,383.56

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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.