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Finding the Fourth Proportional to 245,007.80, 367,511.70 and 78,812.60

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Solution

The fourth proportional to 245,007.80, 367,511.70 and 78,812.60 is: 118,218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,007.80 : 367,511.70 = 78,812.60 : x
  2. Step 2: Convert to fraction form
    245,007.80/367,511.70 = 78,812.60/x
  3. Step 3: Cross multiply
    245,007.80x = 367,511.70 × 78,812.60
  4. Step 4: Simplify right side
    245,007.80x = 28,964,552,607.42
  5. Step 5: Solve for x
    x = 28,964,552,607.42/245,007.80
  6. Step 6: Final answer
    x = 118,218.90

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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.