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Finding the Fourth Proportional to 312,535.41, 431,300.93 and 169,295.45

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Solution

The fourth proportional to 312,535.41, 431,300.93 and 169,295.45 is: 233,628.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,535.41 : 431,300.93 = 169,295.45 : x
  2. Step 2: Convert to fraction form
    312,535.41/431,300.93 = 169,295.45/x
  3. Step 3: Cross multiply
    312,535.41x = 431,300.93 × 169,295.45
  4. Step 4: Simplify right side
    312,535.41x = 73,017,282,873.26
  5. Step 5: Solve for x
    x = 73,017,282,873.26/312,535.41
  6. Step 6: Final answer
    x = 233,628.84

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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.