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Finding the Fourth Proportional to 249,980.22, 344,980.80 and 136,802.88

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Solution

The fourth proportional to 249,980.22, 344,980.80 and 136,802.88 is: 188,792.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,980.22 : 344,980.80 = 136,802.88 : x
  2. Step 2: Convert to fraction form
    249,980.22/344,980.80 = 136,802.88/x
  3. Step 3: Cross multiply
    249,980.22x = 344,980.80 × 136,802.88
  4. Step 4: Simplify right side
    249,980.22x = 47,194,366,984.70
  5. Step 5: Solve for x
    x = 47,194,366,984.70/249,980.22
  6. Step 6: Final answer
    x = 188,792.41

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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.