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Finding the Fourth Proportional to 243,377.60, 365,066.40 and 216,939.20

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Solution

The fourth proportional to 243,377.60, 365,066.40 and 216,939.20 is: 325,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,377.60 : 365,066.40 = 216,939.20 : x
  2. Step 2: Convert to fraction form
    243,377.60/365,066.40 = 216,939.20/x
  3. Step 3: Cross multiply
    243,377.60x = 365,066.40 × 216,939.20
  4. Step 4: Simplify right side
    243,377.60x = 79,197,212,762.88
  5. Step 5: Solve for x
    x = 79,197,212,762.88/243,377.60
  6. Step 6: Final answer
    x = 325,408.80

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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.