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Finding the Fourth Proportional to 486,530.40, 729,212.40 and 249,751.20

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Solution

The fourth proportional to 486,530.40, 729,212.40 and 249,751.20 is: 374,327.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,530.40 : 729,212.40 = 249,751.20 : x
  2. Step 2: Convert to fraction form
    486,530.40/729,212.40 = 249,751.20/x
  3. Step 3: Cross multiply
    486,530.40x = 729,212.40 × 249,751.20
  4. Step 4: Simplify right side
    486,530.40x = 182,121,671,954.88
  5. Step 5: Solve for x
    x = 182,121,671,954.88/486,530.40
  6. Step 6: Final answer
    x = 374,327.43

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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.