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Finding the Fourth Proportional to 249,563.94, 344,400.78 and 136,386.70

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Solution

The fourth proportional to 249,563.94, 344,400.78 and 136,386.70 is: 188,215.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,563.94 : 344,400.78 = 136,386.70 : x
  2. Step 2: Convert to fraction form
    249,563.94/344,400.78 = 136,386.70/x
  3. Step 3: Cross multiply
    249,563.94x = 344,400.78 × 136,386.70
  4. Step 4: Simplify right side
    249,563.94x = 46,971,685,861.63
  5. Step 5: Solve for x
    x = 46,971,685,861.63/249,563.94
  6. Step 6: Final answer
    x = 188,215.04

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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.