Home / 304,945.60-420,825.12-167,123.92

Finding the Fourth Proportional to 304,945.60, 420,825.12 and 167,123.92

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Solution

The fourth proportional to 304,945.60, 420,825.12 and 167,123.92 is: 230,631.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,945.60 : 420,825.12 = 167,123.92 : x
  2. Step 2: Convert to fraction form
    304,945.60/420,825.12 = 167,123.92/x
  3. Step 3: Cross multiply
    304,945.60x = 420,825.12 × 167,123.92
  4. Step 4: Simplify right side
    304,945.60x = 70,329,943,688.87
  5. Step 5: Solve for x
    x = 70,329,943,688.87/304,945.60
  6. Step 6: Final answer
    x = 230,631.11

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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.