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Finding the Fourth Proportional to 238,776.60, 358,087.67 and 78,816.60

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Solution

The fourth proportional to 238,776.60, 358,087.67 and 78,816.60 is: 118,199.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,776.60 : 358,087.67 = 78,816.60 : x
  2. Step 2: Convert to fraction form
    238,776.60/358,087.67 = 78,816.60/x
  3. Step 3: Cross multiply
    238,776.60x = 358,087.67 × 78,816.60
  4. Step 4: Simplify right side
    238,776.60x = 28,223,250,466.80
  5. Step 5: Solve for x
    x = 28,223,250,466.80/238,776.60
  6. Step 6: Final answer
    x = 118,199.40

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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.