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Finding the Fourth Proportional to 280,034.20, 420,051.30 and 93,045.70

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Solution

The fourth proportional to 280,034.20, 420,051.30 and 93,045.70 is: 139,568.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,034.20 : 420,051.30 = 93,045.70 : x
  2. Step 2: Convert to fraction form
    280,034.20/420,051.30 = 93,045.70/x
  3. Step 3: Cross multiply
    280,034.20x = 420,051.30 × 93,045.70
  4. Step 4: Simplify right side
    280,034.20x = 39,083,967,244.41
  5. Step 5: Solve for x
    x = 39,083,967,244.41/280,034.20
  6. Step 6: Final answer
    x = 139,568.55

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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.