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Finding the Fourth Proportional to 249,820.88, 344,758.28 and 136,643.63

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Solution

The fourth proportional to 249,820.88, 344,758.28 and 136,643.63 is: 188,571.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,820.88 : 344,758.28 = 136,643.63 : x
  2. Step 2: Convert to fraction form
    249,820.88/344,758.28 = 136,643.63/x
  3. Step 3: Cross multiply
    249,820.88x = 344,758.28 × 136,643.63
  4. Step 4: Simplify right side
    249,820.88x = 47,109,020,444.75
  5. Step 5: Solve for x
    x = 47,109,020,444.75/249,820.88
  6. Step 6: Final answer
    x = 188,571.19

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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.