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Finding the Fourth Proportional to 249,956.40, 374,934.60 and 72,469.20

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Solution

The fourth proportional to 249,956.40, 374,934.60 and 72,469.20 is: 108,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,956.40 : 374,934.60 = 72,469.20 : x
  2. Step 2: Convert to fraction form
    249,956.40/374,934.60 = 72,469.20/x
  3. Step 3: Cross multiply
    249,956.40x = 374,934.60 × 72,469.20
  4. Step 4: Simplify right side
    249,956.40x = 27,171,210,514.32
  5. Step 5: Solve for x
    x = 27,171,210,514.32/249,956.40
  6. Step 6: Final answer
    x = 108,703.80

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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.