Home / 286,013.09-394,698.13-158,688.38

Finding the Fourth Proportional to 286,013.09, 394,698.13 and 158,688.38

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Solution

The fourth proportional to 286,013.09, 394,698.13 and 158,688.38 is: 218,990.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,013.09 : 394,698.13 = 158,688.38 : x
  2. Step 2: Convert to fraction form
    286,013.09/394,698.13 = 158,688.38/x
  3. Step 3: Cross multiply
    286,013.09x = 394,698.13 × 158,688.38
  4. Step 4: Simplify right side
    286,013.09x = 62,634,007,428.75
  5. Step 5: Solve for x
    x = 62,634,007,428.75/286,013.09
  6. Step 6: Final answer
    x = 218,990.00

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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.