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Finding the Fourth Proportional to 318,628.80, 439,707.60 and 184,492.80

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Solution

The fourth proportional to 318,628.80, 439,707.60 and 184,492.80 is: 254,599.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,628.80 : 439,707.60 = 184,492.80 : x
  2. Step 2: Convert to fraction form
    318,628.80/439,707.60 = 184,492.80/x
  3. Step 3: Cross multiply
    318,628.80x = 439,707.60 × 184,492.80
  4. Step 4: Simplify right side
    318,628.80x = 81,122,886,305.28
  5. Step 5: Solve for x
    x = 81,122,886,305.28/318,628.80
  6. Step 6: Final answer
    x = 254,599.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.