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Finding the Fourth Proportional to 304,641.18, 420,417.95 and 168,675.11

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Solution

The fourth proportional to 304,641.18, 420,417.95 and 168,675.11 is: 232,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,641.18 : 420,417.95 = 168,675.11 : x
  2. Step 2: Convert to fraction form
    304,641.18/420,417.95 = 168,675.11/x
  3. Step 3: Cross multiply
    304,641.18x = 420,417.95 × 168,675.11
  4. Step 4: Simplify right side
    304,641.18x = 70,914,041,016.76
  5. Step 5: Solve for x
    x = 70,914,041,016.76/304,641.18
  6. Step 6: Final answer
    x = 232,778.91

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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.