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Finding the Fourth Proportional to 771,297.66, 1,156,912.65 and 210,330.30

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Solution

The fourth proportional to 771,297.66, 1,156,912.65 and 210,330.30 is: 315,486.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,297.66 : 1,156,912.65 = 210,330.30 : x
  2. Step 2: Convert to fraction form
    771,297.66/1,156,912.65 = 210,330.30/x
  3. Step 3: Cross multiply
    771,297.66x = 1,156,912.65 × 210,330.30
  4. Step 4: Simplify right side
    771,297.66x = 243,333,784,748.30
  5. Step 5: Solve for x
    x = 243,333,784,748.30/771,297.66
  6. Step 6: Final answer
    x = 315,486.22

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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.