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Finding the Fourth Proportional to 401,490.60, 602,235.90 and 164,711.40

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Solution

The fourth proportional to 401,490.60, 602,235.90 and 164,711.40 is: 247,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,490.60 : 602,235.90 = 164,711.40 : x
  2. Step 2: Convert to fraction form
    401,490.60/602,235.90 = 164,711.40/x
  3. Step 3: Cross multiply
    401,490.60x = 602,235.90 × 164,711.40
  4. Step 4: Simplify right side
    401,490.60x = 99,195,118,219.26
  5. Step 5: Solve for x
    x = 99,195,118,219.26/401,490.60
  6. Step 6: Final answer
    x = 247,067.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.