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Finding the Fourth Proportional to 446,937.10, 670,405.65 and 257,980.30

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Solution

The fourth proportional to 446,937.10, 670,405.65 and 257,980.30 is: 386,970.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,937.10 : 670,405.65 = 257,980.30 : x
  2. Step 2: Convert to fraction form
    446,937.10/670,405.65 = 257,980.30/x
  3. Step 3: Cross multiply
    446,937.10x = 670,405.65 × 257,980.30
  4. Step 4: Simplify right side
    446,937.10x = 172,951,450,708.70
  5. Step 5: Solve for x
    x = 172,951,450,708.70/446,937.10
  6. Step 6: Final answer
    x = 386,970.45

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Similar ratio
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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.