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Finding the Fourth Proportional to 249,987.60, 344,980.08 and 136,809

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Solution

The fourth proportional to 249,987.60, 344,980.08 and 136,809 is: 188,794.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,987.60 : 344,980.08 = 136,809 : x
  2. Step 2: Convert to fraction form
    249,987.60/344,980.08 = 136,809/x
  3. Step 3: Cross multiply
    249,987.60x = 344,980.08 × 136,809
  4. Step 4: Simplify right side
    249,987.60x = 47,196,379,764.72
  5. Step 5: Solve for x
    x = 47,196,379,764.72/249,987.60
  6. Step 6: Final answer
    x = 188,794.88

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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.