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Finding the Fourth Proportional to 508,735.72, 702,064.08 and 279,314.30

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Solution

The fourth proportional to 508,735.72, 702,064.08 and 279,314.30 is: 385,458.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,735.72 : 702,064.08 = 279,314.30 : x
  2. Step 2: Convert to fraction form
    508,735.72/702,064.08 = 279,314.30/x
  3. Step 3: Cross multiply
    508,735.72x = 702,064.08 × 279,314.30
  4. Step 4: Simplify right side
    508,735.72x = 196,096,537,060.34
  5. Step 5: Solve for x
    x = 196,096,537,060.34/508,735.72
  6. Step 6: Final answer
    x = 385,458.56

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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.