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Finding the Fourth Proportional to 515,200.80, 772,801.20 and 249,480.30

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Solution

The fourth proportional to 515,200.80, 772,801.20 and 249,480.30 is: 374,220.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,200.80 : 772,801.20 = 249,480.30 : x
  2. Step 2: Convert to fraction form
    515,200.80/772,801.20 = 249,480.30/x
  3. Step 3: Cross multiply
    515,200.80x = 772,801.20 × 249,480.30
  4. Step 4: Simplify right side
    515,200.80x = 192,798,675,216.36
  5. Step 5: Solve for x
    x = 192,798,675,216.36/515,200.80
  6. Step 6: Final answer
    x = 374,220.45

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Double scale
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Similar ratio
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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.