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Finding the Fourth Proportional to 249,293.90, 344,190.12 and 153,940.70

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Solution

The fourth proportional to 249,293.90, 344,190.12 and 153,940.70 is: 212,539.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,293.90 : 344,190.12 = 153,940.70 : x
  2. Step 2: Convert to fraction form
    249,293.90/344,190.12 = 153,940.70/x
  3. Step 3: Cross multiply
    249,293.90x = 344,190.12 × 153,940.70
  4. Step 4: Simplify right side
    249,293.90x = 52,984,868,005.88
  5. Step 5: Solve for x
    x = 52,984,868,005.88/249,293.90
  6. Step 6: Final answer
    x = 212,539.77

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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.