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Finding the Fourth Proportional to 249,679.20, 374,518.80 and 83,445.60

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Solution

The fourth proportional to 249,679.20, 374,518.80 and 83,445.60 is: 125,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,679.20 : 374,518.80 = 83,445.60 : x
  2. Step 2: Convert to fraction form
    249,679.20/374,518.80 = 83,445.60/x
  3. Step 3: Cross multiply
    249,679.20x = 374,518.80 × 83,445.60
  4. Step 4: Simplify right side
    249,679.20x = 31,251,945,977.28
  5. Step 5: Solve for x
    x = 31,251,945,977.28/249,679.20
  6. Step 6: Final answer
    x = 125,168.40

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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.