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Finding the Fourth Proportional to 249,878.95, 374,818.12 and 81,399.00

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Solution

The fourth proportional to 249,878.95, 374,818.12 and 81,399.00 is: 122,098.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,878.95 : 374,818.12 = 81,399.00 : x
  2. Step 2: Convert to fraction form
    249,878.95/374,818.12 = 81,399.00/x
  3. Step 3: Cross multiply
    249,878.95x = 374,818.12 × 81,399.00
  4. Step 4: Simplify right side
    249,878.95x = 30,509,818,805.84
  5. Step 5: Solve for x
    x = 30,509,818,805.84/249,878.95
  6. Step 6: Final answer
    x = 122,098.40

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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.