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Finding the Fourth Proportional to 305,125.83, 421,098.51 and 169,202.40

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Solution

The fourth proportional to 305,125.83, 421,098.51 and 169,202.40 is: 233,513.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,125.83 : 421,098.51 = 169,202.40 : x
  2. Step 2: Convert to fraction form
    305,125.83/421,098.51 = 169,202.40/x
  3. Step 3: Cross multiply
    305,125.83x = 421,098.51 × 169,202.40
  4. Step 4: Simplify right side
    305,125.83x = 71,250,878,528.42
  5. Step 5: Solve for x
    x = 71,250,878,528.42/305,125.83
  6. Step 6: Final answer
    x = 233,513.10

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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.