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Finding the Fourth Proportional to 249,548.70, 374,213.70 and 99,739.20

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Solution

The fourth proportional to 249,548.70, 374,213.70 and 99,739.20 is: 149,565.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,548.70 : 374,213.70 = 99,739.20 : x
  2. Step 2: Convert to fraction form
    249,548.70/374,213.70 = 99,739.20/x
  3. Step 3: Cross multiply
    249,548.70x = 374,213.70 × 99,739.20
  4. Step 4: Simplify right side
    249,548.70x = 37,323,775,067.04
  5. Step 5: Solve for x
    x = 37,323,775,067.04/249,548.70
  6. Step 6: Final answer
    x = 149,565.10

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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.