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Finding the Fourth Proportional to 322,854.51, 445,643.62 and 288,802.92

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Solution

The fourth proportional to 322,854.51, 445,643.62 and 288,802.92 is: 398,641.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,854.51 : 445,643.62 = 288,802.92 : x
  2. Step 2: Convert to fraction form
    322,854.51/445,643.62 = 288,802.92/x
  3. Step 3: Cross multiply
    322,854.51x = 445,643.62 × 288,802.92
  4. Step 4: Simplify right side
    322,854.51x = 128,703,178,802.30
  5. Step 5: Solve for x
    x = 128,703,178,802.30/322,854.51
  6. Step 6: Final answer
    x = 398,641.42

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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.