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Finding the Fourth Proportional to 336,964, 505,475.16 and 87,646

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Solution

The fourth proportional to 336,964, 505,475.16 and 87,646 is: 131,476.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,964 : 505,475.16 = 87,646 : x
  2. Step 2: Convert to fraction form
    336,964/505,475.16 = 87,646/x
  3. Step 3: Cross multiply
    336,964x = 505,475.16 × 87,646
  4. Step 4: Simplify right side
    336,964x = 44,302,875,873.36
  5. Step 5: Solve for x
    x = 44,302,875,873.36/336,964
  6. Step 6: Final answer
    x = 131,476.58

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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.