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Finding the Fourth Proportional to 364,847.80, 547,271.70 and 128,214.40

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Solution

The fourth proportional to 364,847.80, 547,271.70 and 128,214.40 is: 192,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,847.80 : 547,271.70 = 128,214.40 : x
  2. Step 2: Convert to fraction form
    364,847.80/547,271.70 = 128,214.40/x
  3. Step 3: Cross multiply
    364,847.80x = 547,271.70 × 128,214.40
  4. Step 4: Simplify right side
    364,847.80x = 70,168,112,652.48
  5. Step 5: Solve for x
    x = 70,168,112,652.48/364,847.80
  6. Step 6: Final answer
    x = 192,321.60

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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.