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Finding the Fourth Proportional to 249,838.60, 374,628.30 and 91,985.80

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Solution

The fourth proportional to 249,838.60, 374,628.30 and 91,985.80 is: 137,930.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,838.60 : 374,628.30 = 91,985.80 : x
  2. Step 2: Convert to fraction form
    249,838.60/374,628.30 = 91,985.80/x
  3. Step 3: Cross multiply
    249,838.60x = 374,628.30 × 91,985.80
  4. Step 4: Simplify right side
    249,838.60x = 34,460,483,878.14
  5. Step 5: Solve for x
    x = 34,460,483,878.14/249,838.60
  6. Step 6: Final answer
    x = 137,930.98

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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.