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Finding the Fourth Proportional to 140,420.53, 210,630.80 and 46,926.28

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Solution

The fourth proportional to 140,420.53, 210,630.80 and 46,926.28 is: 70,389.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,420.53 : 210,630.80 = 46,926.28 : x
  2. Step 2: Convert to fraction form
    140,420.53/210,630.80 = 46,926.28/x
  3. Step 3: Cross multiply
    140,420.53x = 210,630.80 × 46,926.28
  4. Step 4: Simplify right side
    140,420.53x = 9,884,120,278.03
  5. Step 5: Solve for x
    x = 9,884,120,278.03/140,420.53
  6. Step 6: Final answer
    x = 70,389.42

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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.