Home / 211,365.28-291,713.88-130,818.64

Finding the Fourth Proportional to 211,365.28, 291,713.88 and 130,818.64

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Solution

The fourth proportional to 211,365.28, 291,713.88 and 130,818.64 is: 180,548.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,365.28 : 291,713.88 = 130,818.64 : x
  2. Step 2: Convert to fraction form
    211,365.28/291,713.88 = 130,818.64/x
  3. Step 3: Cross multiply
    211,365.28x = 291,713.88 × 130,818.64
  4. Step 4: Simplify right side
    211,365.28x = 38,161,613,050.72
  5. Step 5: Solve for x
    x = 38,161,613,050.72/211,365.28
  6. Step 6: Final answer
    x = 180,548.16

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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.