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Finding the Fourth Proportional to 304,681.35, 420,455.10 and 168,712.38

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Solution

The fourth proportional to 304,681.35, 420,455.10 and 168,712.38 is: 232,820.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,681.35 : 420,455.10 = 168,712.38 : x
  2. Step 2: Convert to fraction form
    304,681.35/420,455.10 = 168,712.38/x
  3. Step 3: Cross multiply
    304,681.35x = 420,455.10 × 168,712.38
  4. Step 4: Simplify right side
    304,681.35x = 70,935,980,604.14
  5. Step 5: Solve for x
    x = 70,935,980,604.14/304,681.35
  6. Step 6: Final answer
    x = 232,820.23

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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.