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Finding the Fourth Proportional to 249,637, 374,455.50 and 83,425

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Solution

The fourth proportional to 249,637, 374,455.50 and 83,425 is: 125,137.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,637 : 374,455.50 = 83,425 : x
  2. Step 2: Convert to fraction form
    249,637/374,455.50 = 83,425/x
  3. Step 3: Cross multiply
    249,637x = 374,455.50 × 83,425
  4. Step 4: Simplify right side
    249,637x = 31,238,950,087.50
  5. Step 5: Solve for x
    x = 31,238,950,087.50/249,637
  6. Step 6: Final answer
    x = 125,137.50

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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.