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Finding the Fourth Proportional to 304,390.79, 420,023.30 and 168,406.77

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Solution

The fourth proportional to 304,390.79, 420,023.30 and 168,406.77 is: 232,381.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,390.79 : 420,023.30 = 168,406.77 : x
  2. Step 2: Convert to fraction form
    304,390.79/420,023.30 = 168,406.77/x
  3. Step 3: Cross multiply
    304,390.79x = 420,023.30 × 168,406.77
  4. Step 4: Simplify right side
    304,390.79x = 70,734,766,435.71
  5. Step 5: Solve for x
    x = 70,734,766,435.71/304,390.79
  6. Step 6: Final answer
    x = 232,381.43

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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.