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Finding the Fourth Proportional to 458,342.40, 632,628.78 and 313,206.94

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Solution

The fourth proportional to 458,342.40, 632,628.78 and 313,206.94 is: 432,305.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,342.40 : 632,628.78 = 313,206.94 : x
  2. Step 2: Convert to fraction form
    458,342.40/632,628.78 = 313,206.94/x
  3. Step 3: Cross multiply
    458,342.40x = 632,628.78 × 313,206.94
  4. Step 4: Simplify right side
    458,342.40x = 198,143,724,339.73
  5. Step 5: Solve for x
    x = 198,143,724,339.73/458,342.40
  6. Step 6: Final answer
    x = 432,305.03

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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.