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Finding the Fourth Proportional to 559,903.11, 772,666.26 and 318,186.15

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Solution

The fourth proportional to 559,903.11, 772,666.26 and 318,186.15 is: 439,096.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,903.11 : 772,666.26 = 318,186.15 : x
  2. Step 2: Convert to fraction form
    559,903.11/772,666.26 = 318,186.15/x
  3. Step 3: Cross multiply
    559,903.11x = 772,666.26 × 318,186.15
  4. Step 4: Simplify right side
    559,903.11x = 245,851,702,504.30
  5. Step 5: Solve for x
    x = 245,851,702,504.30/559,903.11
  6. Step 6: Final answer
    x = 439,096.87

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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.