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Finding the Fourth Proportional to 243,697.36, 336,276.47 and 134,784.39

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Solution

The fourth proportional to 243,697.36, 336,276.47 and 134,784.39 is: 185,988.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,697.36 : 336,276.47 = 134,784.39 : x
  2. Step 2: Convert to fraction form
    243,697.36/336,276.47 = 134,784.39/x
  3. Step 3: Cross multiply
    243,697.36x = 336,276.47 × 134,784.39
  4. Step 4: Simplify right side
    243,697.36x = 45,324,819,931.17
  5. Step 5: Solve for x
    x = 45,324,819,931.17/243,697.36
  6. Step 6: Final answer
    x = 185,988.14

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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.