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Finding the Fourth Proportional to 249,622.60, 374,433.90 and 138,814.60

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Solution

The fourth proportional to 249,622.60, 374,433.90 and 138,814.60 is: 208,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,622.60 : 374,433.90 = 138,814.60 : x
  2. Step 2: Convert to fraction form
    249,622.60/374,433.90 = 138,814.60/x
  3. Step 3: Cross multiply
    249,622.60x = 374,433.90 × 138,814.60
  4. Step 4: Simplify right side
    249,622.60x = 51,976,892,054.94
  5. Step 5: Solve for x
    x = 51,976,892,054.94/249,622.60
  6. Step 6: Final answer
    x = 208,221.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.