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Finding the Fourth Proportional to 340,438.56, 510,548.06 and 112,691.68

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Solution

The fourth proportional to 340,438.56, 510,548.06 and 112,691.68 is: 169,001.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,438.56 : 510,548.06 = 112,691.68 : x
  2. Step 2: Convert to fraction form
    340,438.56/510,548.06 = 112,691.68/x
  3. Step 3: Cross multiply
    340,438.56x = 510,548.06 × 112,691.68
  4. Step 4: Simplify right side
    340,438.56x = 57,534,518,602.14
  5. Step 5: Solve for x
    x = 57,534,518,602.14/340,438.56
  6. Step 6: Final answer
    x = 169,001.18

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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.