Home / 210,505.45-290,483.58-119,870.68

Finding the Fourth Proportional to 210,505.45, 290,483.58 and 119,870.68

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Solution

The fourth proportional to 210,505.45, 290,483.58 and 119,870.68 is: 165,413.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,505.45 : 290,483.58 = 119,870.68 : x
  2. Step 2: Convert to fraction form
    210,505.45/290,483.58 = 119,870.68/x
  3. Step 3: Cross multiply
    210,505.45x = 290,483.58 × 119,870.68
  4. Step 4: Simplify right side
    210,505.45x = 34,820,464,263.43
  5. Step 5: Solve for x
    x = 34,820,464,263.43/210,505.45
  6. Step 6: Final answer
    x = 165,413.60

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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.