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Finding the Fourth Proportional to 316,959.51, 475,494.64 and 139,461.92

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Solution

The fourth proportional to 316,959.51, 475,494.64 and 139,461.92 is: 209,217.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,959.51 : 475,494.64 = 139,461.92 : x
  2. Step 2: Convert to fraction form
    316,959.51/475,494.64 = 139,461.92/x
  3. Step 3: Cross multiply
    316,959.51x = 475,494.64 × 139,461.92
  4. Step 4: Simplify right side
    316,959.51x = 66,313,394,501.09
  5. Step 5: Solve for x
    x = 66,313,394,501.09/316,959.51
  6. Step 6: Final answer
    x = 209,217.24

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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.