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Finding the Fourth Proportional to 201,505.04, 278,079.27 and 115,462.31

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Solution

The fourth proportional to 201,505.04, 278,079.27 and 115,462.31 is: 159,339.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,505.04 : 278,079.27 = 115,462.31 : x
  2. Step 2: Convert to fraction form
    201,505.04/278,079.27 = 115,462.31/x
  3. Step 3: Cross multiply
    201,505.04x = 278,079.27 × 115,462.31
  4. Step 4: Simplify right side
    201,505.04x = 32,107,675,572.51
  5. Step 5: Solve for x
    x = 32,107,675,572.51/201,505.04
  6. Step 6: Final answer
    x = 159,339.32

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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.