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Finding the Fourth Proportional to 304,431.85, 420,109.67 and 168,465.71

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Solution

The fourth proportional to 304,431.85, 420,109.67 and 168,465.71 is: 232,479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,431.85 : 420,109.67 = 168,465.71 : x
  2. Step 2: Convert to fraction form
    304,431.85/420,109.67 = 168,465.71/x
  3. Step 3: Cross multiply
    304,431.85x = 420,109.67 × 168,465.71
  4. Step 4: Simplify right side
    304,431.85x = 70,774,072,992.09
  5. Step 5: Solve for x
    x = 70,774,072,992.09/304,431.85
  6. Step 6: Final answer
    x = 232,479.20

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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.