Home / 211,323.09-291,655.74-130,776.54

Finding the Fourth Proportional to 211,323.09, 291,655.74 and 130,776.54

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Solution

The fourth proportional to 211,323.09, 291,655.74 and 130,776.54 is: 180,490.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,323.09 : 291,655.74 = 130,776.54 : x
  2. Step 2: Convert to fraction form
    211,323.09/291,655.74 = 130,776.54/x
  3. Step 3: Cross multiply
    211,323.09x = 291,655.74 × 130,776.54
  4. Step 4: Simplify right side
    211,323.09x = 38,141,728,548.34
  5. Step 5: Solve for x
    x = 38,141,728,548.34/211,323.09
  6. Step 6: Final answer
    x = 180,490.11

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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.