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Finding the Fourth Proportional to 249,478.16, 374,453.80 and 154,420.78

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Solution

The fourth proportional to 249,478.16, 374,453.80 and 154,420.78 is: 231,777.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,478.16 : 374,453.80 = 154,420.78 : x
  2. Step 2: Convert to fraction form
    249,478.16/374,453.80 = 154,420.78/x
  3. Step 3: Cross multiply
    249,478.16x = 374,453.80 × 154,420.78
  4. Step 4: Simplify right side
    249,478.16x = 57,823,447,869.96
  5. Step 5: Solve for x
    x = 57,823,447,869.96/249,478.16
  6. Step 6: Final answer
    x = 231,777.59

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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.