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Finding the Fourth Proportional to 249,886.76, 374,829.68 and 81,406.89

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Solution

The fourth proportional to 249,886.76, 374,829.68 and 81,406.89 is: 122,110.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,886.76 : 374,829.68 = 81,406.89 : x
  2. Step 2: Convert to fraction form
    249,886.76/374,829.68 = 81,406.89/x
  3. Step 3: Cross multiply
    249,886.76x = 374,829.68 × 81,406.89
  4. Step 4: Simplify right side
    249,886.76x = 30,513,717,122.88
  5. Step 5: Solve for x
    x = 30,513,717,122.88/249,886.76
  6. Step 6: Final answer
    x = 122,110.18

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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.