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Finding the Fourth Proportional to 309,039.60, 463,559.40 and 238,969.20

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Solution

The fourth proportional to 309,039.60, 463,559.40 and 238,969.20 is: 358,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,039.60 : 463,559.40 = 238,969.20 : x
  2. Step 2: Convert to fraction form
    309,039.60/463,559.40 = 238,969.20/x
  3. Step 3: Cross multiply
    309,039.60x = 463,559.40 × 238,969.20
  4. Step 4: Simplify right side
    309,039.60x = 110,776,418,970.48
  5. Step 5: Solve for x
    x = 110,776,418,970.48/309,039.60
  6. Step 6: Final answer
    x = 358,453.80

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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.