Home / 381,250.09-571,476.12-128,443.22

Finding the Fourth Proportional to 381,250.09, 571,476.12 and 128,443.22

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Solution

The fourth proportional to 381,250.09, 571,476.12 and 128,443.22 is: 192,530.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,250.09 : 571,476.12 = 128,443.22 : x
  2. Step 2: Convert to fraction form
    381,250.09/571,476.12 = 128,443.22/x
  3. Step 3: Cross multiply
    381,250.09x = 571,476.12 × 128,443.22
  4. Step 4: Simplify right side
    381,250.09x = 73,402,233,005.91
  5. Step 5: Solve for x
    x = 73,402,233,005.91/381,250.09
  6. Step 6: Final answer
    x = 192,530.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.