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Finding the Fourth Proportional to 304,636.70, 420,411.78 and 168,670.64

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Solution

The fourth proportional to 304,636.70, 420,411.78 and 168,670.64 is: 232,772.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,636.70 : 420,411.78 = 168,670.64 : x
  2. Step 2: Convert to fraction form
    304,636.70/420,411.78 = 168,670.64/x
  3. Step 3: Cross multiply
    304,636.70x = 420,411.78 × 168,670.64
  4. Step 4: Simplify right side
    304,636.70x = 70,911,125,047.17
  5. Step 5: Solve for x
    x = 70,911,125,047.17/304,636.70
  6. Step 6: Final answer
    x = 232,772.76

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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.