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Finding the Fourth Proportional to 408,129.12, 612,401.04 and 183,444.30

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Solution

The fourth proportional to 408,129.12, 612,401.04 and 183,444.30 is: 275,259.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,129.12 : 612,401.04 = 183,444.30 : x
  2. Step 2: Convert to fraction form
    408,129.12/612,401.04 = 183,444.30/x
  3. Step 3: Cross multiply
    408,129.12x = 612,401.04 × 183,444.30
  4. Step 4: Simplify right side
    408,129.12x = 112,341,480,102.07
  5. Step 5: Solve for x
    x = 112,341,480,102.07/408,129.12
  6. Step 6: Final answer
    x = 275,259.65

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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.