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Finding the Fourth Proportional to 402,449.81, 555,051.15 and 249,381.68

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Solution

The fourth proportional to 402,449.81, 555,051.15 and 249,381.68 is: 343,942.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,449.81 : 555,051.15 = 249,381.68 : x
  2. Step 2: Convert to fraction form
    402,449.81/555,051.15 = 249,381.68/x
  3. Step 3: Cross multiply
    402,449.81x = 555,051.15 × 249,381.68
  4. Step 4: Simplify right side
    402,449.81x = 138,419,585,497.68
  5. Step 5: Solve for x
    x = 138,419,585,497.68/402,449.81
  6. Step 6: Final answer
    x = 343,942.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.