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Finding the Fourth Proportional to 492,852.80, 739,106.40 and 256,116.80

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Solution

The fourth proportional to 492,852.80, 739,106.40 and 256,116.80 is: 384,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,852.80 : 739,106.40 = 256,116.80 : x
  2. Step 2: Convert to fraction form
    492,852.80/739,106.40 = 256,116.80/x
  3. Step 3: Cross multiply
    492,852.80x = 739,106.40 × 256,116.80
  4. Step 4: Simplify right side
    492,852.80x = 189,297,566,027.52
  5. Step 5: Solve for x
    x = 189,297,566,027.52/492,852.80
  6. Step 6: Final answer
    x = 384,085.40

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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.