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Finding the Fourth Proportional to 243,768.60, 336,492.90 and 218,228.76

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Solution

The fourth proportional to 243,768.60, 336,492.90 and 218,228.76 is: 301,238.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,768.60 : 336,492.90 = 218,228.76 : x
  2. Step 2: Convert to fraction form
    243,768.60/336,492.90 = 218,228.76/x
  3. Step 3: Cross multiply
    243,768.60x = 336,492.90 × 218,228.76
  4. Step 4: Simplify right side
    243,768.60x = 73,432,428,315.80
  5. Step 5: Solve for x
    x = 73,432,428,315.80/243,768.60
  6. Step 6: Final answer
    x = 301,238.26

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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.