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Finding the Fourth Proportional to 310,989.87, 429,148.26 and 175,029.48

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Solution

The fourth proportional to 310,989.87, 429,148.26 and 175,029.48 is: 241,530.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,989.87 : 429,148.26 = 175,029.48 : x
  2. Step 2: Convert to fraction form
    310,989.87/429,148.26 = 175,029.48/x
  3. Step 3: Cross multiply
    310,989.87x = 429,148.26 × 175,029.48
  4. Step 4: Simplify right side
    310,989.87x = 75,113,596,790.70
  5. Step 5: Solve for x
    x = 75,113,596,790.70/310,989.87
  6. Step 6: Final answer
    x = 241,530.69

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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.