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Finding the Fourth Proportional to 304,641.14, 420,420.29 and 168,690.11

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Solution

The fourth proportional to 304,641.14, 420,420.29 and 168,690.11 is: 232,800.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,641.14 : 420,420.29 = 168,690.11 : x
  2. Step 2: Convert to fraction form
    304,641.14/420,420.29 = 168,690.11/x
  3. Step 3: Cross multiply
    304,641.14x = 420,420.29 × 168,690.11
  4. Step 4: Simplify right side
    304,641.14x = 70,920,742,020.78
  5. Step 5: Solve for x
    x = 70,920,742,020.78/304,641.14
  6. Step 6: Final answer
    x = 232,800.94

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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.