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Finding the Fourth Proportional to 364,806.16, 547,291.32 and 128,165.20

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Solution

The fourth proportional to 364,806.16, 547,291.32 and 128,165.20 is: 192,276.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,806.16 : 547,291.32 = 128,165.20 : x
  2. Step 2: Convert to fraction form
    364,806.16/547,291.32 = 128,165.20/x
  3. Step 3: Cross multiply
    364,806.16x = 547,291.32 × 128,165.20
  4. Step 4: Simplify right side
    364,806.16x = 70,143,701,486.06
  5. Step 5: Solve for x
    x = 70,143,701,486.06/364,806.16
  6. Step 6: Final answer
    x = 192,276.64

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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.