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Finding the Fourth Proportional to 160,315.20, 240,559.20 and 66,830.40

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Solution

The fourth proportional to 160,315.20, 240,559.20 and 66,830.40 is: 100,281.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,315.20 : 240,559.20 = 66,830.40 : x
  2. Step 2: Convert to fraction form
    160,315.20/240,559.20 = 66,830.40/x
  3. Step 3: Cross multiply
    160,315.20x = 240,559.20 × 66,830.40
  4. Step 4: Simplify right side
    160,315.20x = 16,076,667,559.68
  5. Step 5: Solve for x
    x = 16,076,667,559.68/160,315.20
  6. Step 6: Final answer
    x = 100,281.62

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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.