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Finding the Fourth Proportional to 249,030, 343,661.40 and 159,606

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Solution

The fourth proportional to 249,030, 343,661.40 and 159,606 is: 220,256.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,030 : 343,661.40 = 159,606 : x
  2. Step 2: Convert to fraction form
    249,030/343,661.40 = 159,606/x
  3. Step 3: Cross multiply
    249,030x = 343,661.40 × 159,606
  4. Step 4: Simplify right side
    249,030x = 54,850,421,408.40
  5. Step 5: Solve for x
    x = 54,850,421,408.40/249,030
  6. Step 6: Final answer
    x = 220,256.28

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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.