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Finding the Fourth Proportional to 424,448, 585,821.43 and 243,281.36

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Solution

The fourth proportional to 424,448, 585,821.43 and 243,281.36 is: 335,775.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,448 : 585,821.43 = 243,281.36 : x
  2. Step 2: Convert to fraction form
    424,448/585,821.43 = 243,281.36/x
  3. Step 3: Cross multiply
    424,448x = 585,821.43 × 243,281.36
  4. Step 4: Simplify right side
    424,448x = 142,519,434,207.55
  5. Step 5: Solve for x
    x = 142,519,434,207.55/424,448
  6. Step 6: Final answer
    x = 335,775.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.