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Finding the Fourth Proportional to 140,319, 210,347.28 and 51,548.67

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Solution

The fourth proportional to 140,319, 210,347.28 and 51,548.67 is: 77,274.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,319 : 210,347.28 = 51,548.67 : x
  2. Step 2: Convert to fraction form
    140,319/210,347.28 = 51,548.67/x
  3. Step 3: Cross multiply
    140,319x = 210,347.28 × 51,548.67
  4. Step 4: Simplify right side
    140,319x = 10,843,122,522.12
  5. Step 5: Solve for x
    x = 10,843,122,522.12/140,319
  6. Step 6: Final answer
    x = 77,274.80

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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.