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Finding the Fourth Proportional to 259,715.20, 389,572.80 and 249,217.60

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Solution

The fourth proportional to 259,715.20, 389,572.80 and 249,217.60 is: 373,826.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,715.20 : 389,572.80 = 249,217.60 : x
  2. Step 2: Convert to fraction form
    259,715.20/389,572.80 = 249,217.60/x
  3. Step 3: Cross multiply
    259,715.20x = 389,572.80 × 249,217.60
  4. Step 4: Simplify right side
    259,715.20x = 97,088,398,241.28
  5. Step 5: Solve for x
    x = 97,088,398,241.28/259,715.20
  6. Step 6: Final answer
    x = 373,826.40

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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.