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Finding the Fourth Proportional to 326,956.80, 490,070.70 and 127,210.80

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Solution

The fourth proportional to 326,956.80, 490,070.70 and 127,210.80 is: 190,674.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,956.80 : 490,070.70 = 127,210.80 : x
  2. Step 2: Convert to fraction form
    326,956.80/490,070.70 = 127,210.80/x
  3. Step 3: Cross multiply
    326,956.80x = 490,070.70 × 127,210.80
  4. Step 4: Simplify right side
    326,956.80x = 62,342,285,803.56
  5. Step 5: Solve for x
    x = 62,342,285,803.56/326,956.80
  6. Step 6: Final answer
    x = 190,674.38

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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.