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Finding the Fourth Proportional to 303,368.40, 418,731.66 and 176,085

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Solution

The fourth proportional to 303,368.40, 418,731.66 and 176,085 is: 243,045.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,368.40 : 418,731.66 = 176,085 : x
  2. Step 2: Convert to fraction form
    303,368.40/418,731.66 = 176,085/x
  3. Step 3: Cross multiply
    303,368.40x = 418,731.66 × 176,085
  4. Step 4: Simplify right side
    303,368.40x = 73,732,364,351.10
  5. Step 5: Solve for x
    x = 73,732,364,351.10/303,368.40
  6. Step 6: Final answer
    x = 243,045.63

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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.