Home / 309,421.95-464,133.24-84,784.20

Finding the Fourth Proportional to 309,421.95, 464,133.24 and 84,784.20

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Solution

The fourth proportional to 309,421.95, 464,133.24 and 84,784.20 is: 127,176.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,421.95 : 464,133.24 = 84,784.20 : x
  2. Step 2: Convert to fraction form
    309,421.95/464,133.24 = 84,784.20/x
  3. Step 3: Cross multiply
    309,421.95x = 464,133.24 × 84,784.20
  4. Step 4: Simplify right side
    309,421.95x = 39,351,165,446.81
  5. Step 5: Solve for x
    x = 39,351,165,446.81/309,421.95
  6. Step 6: Final answer
    x = 127,176.39

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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.