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Finding the Fourth Proportional to 284,994.40, 427,491.60 and 74,653.60

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Solution

The fourth proportional to 284,994.40, 427,491.60 and 74,653.60 is: 111,980.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,994.40 : 427,491.60 = 74,653.60 : x
  2. Step 2: Convert to fraction form
    284,994.40/427,491.60 = 74,653.60/x
  3. Step 3: Cross multiply
    284,994.40x = 427,491.60 × 74,653.60
  4. Step 4: Simplify right side
    284,994.40x = 31,913,786,909.76
  5. Step 5: Solve for x
    x = 31,913,786,909.76/284,994.40
  6. Step 6: Final answer
    x = 111,980.40

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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.