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Finding the Fourth Proportional to 249,330, 344,100.30 and 148,728

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Solution

The fourth proportional to 249,330, 344,100.30 and 148,728 is: 205,259.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,330 : 344,100.30 = 148,728 : x
  2. Step 2: Convert to fraction form
    249,330/344,100.30 = 148,728/x
  3. Step 3: Cross multiply
    249,330x = 344,100.30 × 148,728
  4. Step 4: Simplify right side
    249,330x = 51,177,349,418.40
  5. Step 5: Solve for x
    x = 51,177,349,418.40/249,330
  6. Step 6: Final answer
    x = 205,259.49

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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.