Home / 282,645.07-390,049-161,785.75

Finding the Fourth Proportional to 282,645.07, 390,049 and 161,785.75

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Solution

The fourth proportional to 282,645.07, 390,049 and 161,785.75 is: 223,263.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,645.07 : 390,049 = 161,785.75 : x
  2. Step 2: Convert to fraction form
    282,645.07/390,049 = 161,785.75/x
  3. Step 3: Cross multiply
    282,645.07x = 390,049 × 161,785.75
  4. Step 4: Simplify right side
    282,645.07x = 63,104,370,001.75
  5. Step 5: Solve for x
    x = 63,104,370,001.75/282,645.07
  6. Step 6: Final answer
    x = 223,263.65

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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.