Home / 388,923.60-583,313.40-108,382.80

Finding the Fourth Proportional to 388,923.60, 583,313.40 and 108,382.80

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Solution

The fourth proportional to 388,923.60, 583,313.40 and 108,382.80 is: 162,554.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,923.60 : 583,313.40 = 108,382.80 : x
  2. Step 2: Convert to fraction form
    388,923.60/583,313.40 = 108,382.80/x
  3. Step 3: Cross multiply
    388,923.60x = 583,313.40 × 108,382.80
  4. Step 4: Simplify right side
    388,923.60x = 63,221,139,569.52
  5. Step 5: Solve for x
    x = 63,221,139,569.52/388,923.60
  6. Step 6: Final answer
    x = 162,554.14

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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.