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Finding the Fourth Proportional to 310,878.57, 428,981.81 and 174,909.52

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Solution

The fourth proportional to 310,878.57, 428,981.81 and 174,909.52 is: 241,357.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,878.57 : 428,981.81 = 174,909.52 : x
  2. Step 2: Convert to fraction form
    310,878.57/428,981.81 = 174,909.52/x
  3. Step 3: Cross multiply
    310,878.57x = 428,981.81 × 174,909.52
  4. Step 4: Simplify right side
    310,878.57x = 75,033,000,528.83
  5. Step 5: Solve for x
    x = 75,033,000,528.83/310,878.57
  6. Step 6: Final answer
    x = 241,357.91

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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.