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Finding the Fourth Proportional to 418,030, 576,903.30 and 245,956.84

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Solution

The fourth proportional to 418,030, 576,903.30 and 245,956.84 is: 339,433.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,030 : 576,903.30 = 245,956.84 : x
  2. Step 2: Convert to fraction form
    418,030/576,903.30 = 245,956.84/x
  3. Step 3: Cross multiply
    418,030x = 576,903.30 × 245,956.84
  4. Step 4: Simplify right side
    418,030x = 141,893,312,653.57
  5. Step 5: Solve for x
    x = 141,893,312,653.57/418,030
  6. Step 6: Final answer
    x = 339,433.32

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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.