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Finding the Fourth Proportional to 245,008.80, 367,513.20 and 78,813.60

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Solution

The fourth proportional to 245,008.80, 367,513.20 and 78,813.60 is: 118,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,008.80 : 367,513.20 = 78,813.60 : x
  2. Step 2: Convert to fraction form
    245,008.80/367,513.20 = 78,813.60/x
  3. Step 3: Cross multiply
    245,008.80x = 367,513.20 × 78,813.60
  4. Step 4: Simplify right side
    245,008.80x = 28,965,038,339.52
  5. Step 5: Solve for x
    x = 28,965,038,339.52/245,008.80
  6. Step 6: Final answer
    x = 118,220.40

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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.