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Finding the Fourth Proportional to 291,444.51, 437,182.29 and 91,780.47

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Solution

The fourth proportional to 291,444.51, 437,182.29 and 91,780.47 is: 137,675.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,444.51 : 437,182.29 = 91,780.47 : x
  2. Step 2: Convert to fraction form
    291,444.51/437,182.29 = 91,780.47/x
  3. Step 3: Cross multiply
    291,444.51x = 437,182.29 × 91,780.47
  4. Step 4: Simplify right side
    291,444.51x = 40,124,796,051.88
  5. Step 5: Solve for x
    x = 40,124,796,051.88/291,444.51
  6. Step 6: Final answer
    x = 137,675.59

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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.