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Finding the Fourth Proportional to 486,019.20, 728,664.30 and 249,531.60

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Solution

The fourth proportional to 486,019.20, 728,664.30 and 249,531.60 is: 374,110.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,019.20 : 728,664.30 = 249,531.60 : x
  2. Step 2: Convert to fraction form
    486,019.20/728,664.30 = 249,531.60/x
  3. Step 3: Cross multiply
    486,019.20x = 728,664.30 × 249,531.60
  4. Step 4: Simplify right side
    486,019.20x = 181,824,768,641.88
  5. Step 5: Solve for x
    x = 181,824,768,641.88/486,019.20
  6. Step 6: Final answer
    x = 374,110.26

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1.5x scale

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.