Home / 386,323.40-579,485.10-137,030.60

Finding the Fourth Proportional to 386,323.40, 579,485.10 and 137,030.60

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Solution

The fourth proportional to 386,323.40, 579,485.10 and 137,030.60 is: 205,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,323.40 : 579,485.10 = 137,030.60 : x
  2. Step 2: Convert to fraction form
    386,323.40/579,485.10 = 137,030.60/x
  3. Step 3: Cross multiply
    386,323.40x = 579,485.10 × 137,030.60
  4. Step 4: Simplify right side
    386,323.40x = 79,407,190,944.06
  5. Step 5: Solve for x
    x = 79,407,190,944.06/386,323.40
  6. Step 6: Final answer
    x = 205,545.90

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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.