Home / 211,368.23-291,555.80-138,774.87

Finding the Fourth Proportional to 211,368.23, 291,555.80 and 138,774.87

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Solution

The fourth proportional to 211,368.23, 291,555.80 and 138,774.87 is: 191,422.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,368.23 : 291,555.80 = 138,774.87 : x
  2. Step 2: Convert to fraction form
    211,368.23/291,555.80 = 138,774.87/x
  3. Step 3: Cross multiply
    211,368.23x = 291,555.80 × 138,774.87
  4. Step 4: Simplify right side
    211,368.23x = 40,460,616,784.97
  5. Step 5: Solve for x
    x = 40,460,616,784.97/211,368.23
  6. Step 6: Final answer
    x = 191,422.41

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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.