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Finding the Fourth Proportional to 316,230, 436,501.08 and 227,065.20

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Solution

The fourth proportional to 316,230, 436,501.08 and 227,065.20 is: 313,424.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,230 : 436,501.08 = 227,065.20 : x
  2. Step 2: Convert to fraction form
    316,230/436,501.08 = 227,065.20/x
  3. Step 3: Cross multiply
    316,230x = 436,501.08 × 227,065.20
  4. Step 4: Simplify right side
    316,230x = 99,114,205,030.42
  5. Step 5: Solve for x
    x = 99,114,205,030.42/316,230
  6. Step 6: Final answer
    x = 313,424.42

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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.