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Finding the Fourth Proportional to 312,953.32, 431,875.80 and 169,713.32

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Solution

The fourth proportional to 312,953.32, 431,875.80 and 169,713.32 is: 234,204.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,953.32 : 431,875.80 = 169,713.32 : x
  2. Step 2: Convert to fraction form
    312,953.32/431,875.80 = 169,713.32/x
  3. Step 3: Cross multiply
    312,953.32x = 431,875.80 × 169,713.32
  4. Step 4: Simplify right side
    312,953.32x = 73,295,075,845.66
  5. Step 5: Solve for x
    x = 73,295,075,845.66/312,953.32
  6. Step 6: Final answer
    x = 234,204.50

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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.