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Finding the Fourth Proportional to 323,417.82, 485,193.93 and 136,430.94

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Solution

The fourth proportional to 323,417.82, 485,193.93 and 136,430.94 is: 204,674.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,417.82 : 485,193.93 = 136,430.94 : x
  2. Step 2: Convert to fraction form
    323,417.82/485,193.93 = 136,430.94/x
  3. Step 3: Cross multiply
    323,417.82x = 485,193.93 × 136,430.94
  4. Step 4: Simplify right side
    323,417.82x = 66,195,463,952.19
  5. Step 5: Solve for x
    x = 66,195,463,952.19/323,417.82
  6. Step 6: Final answer
    x = 204,674.76

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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.