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Finding the Fourth Proportional to 163,838.40, 245,757.60 and 140,218.80

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Solution

The fourth proportional to 163,838.40, 245,757.60 and 140,218.80 is: 210,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,838.40 : 245,757.60 = 140,218.80 : x
  2. Step 2: Convert to fraction form
    163,838.40/245,757.60 = 140,218.80/x
  3. Step 3: Cross multiply
    163,838.40x = 245,757.60 × 140,218.80
  4. Step 4: Simplify right side
    163,838.40x = 34,459,835,762.88
  5. Step 5: Solve for x
    x = 34,459,835,762.88/163,838.40
  6. Step 6: Final answer
    x = 210,328.20

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1.5x scale

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.