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Finding the Fourth Proportional to 249,956.93, 374,935.11 and 81,477.20

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Solution

The fourth proportional to 249,956.93, 374,935.11 and 81,477.20 is: 122,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,956.93 : 374,935.11 = 81,477.20 : x
  2. Step 2: Convert to fraction form
    249,956.93/374,935.11 = 81,477.20/x
  3. Step 3: Cross multiply
    249,956.93x = 374,935.11 × 81,477.20
  4. Step 4: Simplify right side
    249,956.93x = 30,548,661,069.82
  5. Step 5: Solve for x
    x = 30,548,661,069.82/249,956.93
  6. Step 6: Final answer
    x = 122,215.70

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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.