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Finding the Fourth Proportional to 245,010.80, 367,516.20 and 78,815.60

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Solution

The fourth proportional to 245,010.80, 367,516.20 and 78,815.60 is: 118,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,010.80 : 367,516.20 = 78,815.60 : x
  2. Step 2: Convert to fraction form
    245,010.80/367,516.20 = 78,815.60/x
  3. Step 3: Cross multiply
    245,010.80x = 367,516.20 × 78,815.60
  4. Step 4: Simplify right side
    245,010.80x = 28,966,009,812.72
  5. Step 5: Solve for x
    x = 28,966,009,812.72/245,010.80
  6. Step 6: Final answer
    x = 118,223.40

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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.