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Finding the Fourth Proportional to 249,013.57, 343,638.31 and 135,836.32

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Solution

The fourth proportional to 249,013.57, 343,638.31 and 135,836.32 is: 187,453.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,013.57 : 343,638.31 = 135,836.32 : x
  2. Step 2: Convert to fraction form
    249,013.57/343,638.31 = 135,836.32/x
  3. Step 3: Cross multiply
    249,013.57x = 343,638.31 × 135,836.32
  4. Step 4: Simplify right side
    249,013.57x = 46,678,563,441.42
  5. Step 5: Solve for x
    x = 46,678,563,441.42/249,013.57
  6. Step 6: Final answer
    x = 187,453.89

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1.5x scale

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.