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Finding the Fourth Proportional to 518,329.40, 777,506.40 and 139,250.60

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Solution

The fourth proportional to 518,329.40, 777,506.40 and 139,250.60 is: 208,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,329.40 : 777,506.40 = 139,250.60 : x
  2. Step 2: Convert to fraction form
    518,329.40/777,506.40 = 139,250.60/x
  3. Step 3: Cross multiply
    518,329.40x = 777,506.40 × 139,250.60
  4. Step 4: Simplify right side
    518,329.40x = 108,268,232,703.84
  5. Step 5: Solve for x
    x = 108,268,232,703.84/518,329.40
  6. Step 6: Final answer
    x = 208,879.20

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1.5x scale

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.