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Finding the Fourth Proportional to 309,124.80, 426,597.60 and 173,157.60

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Solution

The fourth proportional to 309,124.80, 426,597.60 and 173,157.60 is: 238,960.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,124.80 : 426,597.60 = 173,157.60 : x
  2. Step 2: Convert to fraction form
    309,124.80/426,597.60 = 173,157.60/x
  3. Step 3: Cross multiply
    309,124.80x = 426,597.60 × 173,157.60
  4. Step 4: Simplify right side
    309,124.80x = 73,868,616,581.76
  5. Step 5: Solve for x
    x = 73,868,616,581.76/309,124.80
  6. Step 6: Final answer
    x = 238,960.50

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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.