Home / 309,711.20-464,253.04-209,881.52

Finding the Fourth Proportional to 309,711.20, 464,253.04 and 209,881.52

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Solution

The fourth proportional to 309,711.20, 464,253.04 and 209,881.52 is: 314,609.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,711.20 : 464,253.04 = 209,881.52 : x
  2. Step 2: Convert to fraction form
    309,711.20/464,253.04 = 209,881.52/x
  3. Step 3: Cross multiply
    309,711.20x = 464,253.04 × 209,881.52
  4. Step 4: Simplify right side
    309,711.20x = 97,438,133,699.82
  5. Step 5: Solve for x
    x = 97,438,133,699.82/309,711.20
  6. Step 6: Final answer
    x = 314,609.65

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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.