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Finding the Fourth Proportional to 295,971.60, 443,989.80 and 286,640.40

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Solution

The fourth proportional to 295,971.60, 443,989.80 and 286,640.40 is: 429,991.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,971.60 : 443,989.80 = 286,640.40 : x
  2. Step 2: Convert to fraction form
    295,971.60/443,989.80 = 286,640.40/x
  3. Step 3: Cross multiply
    295,971.60x = 443,989.80 × 286,640.40
  4. Step 4: Simplify right side
    295,971.60x = 127,265,413,867.92
  5. Step 5: Solve for x
    x = 127,265,413,867.92/295,971.60
  6. Step 6: Final answer
    x = 429,991.98

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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.