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Finding the Fourth Proportional to 326,924.40, 490,386.60 and 307,570.80

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Solution

The fourth proportional to 326,924.40, 490,386.60 and 307,570.80 is: 461,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,924.40 : 490,386.60 = 307,570.80 : x
  2. Step 2: Convert to fraction form
    326,924.40/490,386.60 = 307,570.80/x
  3. Step 3: Cross multiply
    326,924.40x = 490,386.60 × 307,570.80
  4. Step 4: Simplify right side
    326,924.40x = 150,828,598,871.28
  5. Step 5: Solve for x
    x = 150,828,598,871.28/326,924.40
  6. Step 6: Final answer
    x = 461,356.20

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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.