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Finding the Fourth Proportional to 140,401.80, 210,602.85 and 35,220.78

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Solution

The fourth proportional to 140,401.80, 210,602.85 and 35,220.78 is: 52,831.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,401.80 : 210,602.85 = 35,220.78 : x
  2. Step 2: Convert to fraction form
    140,401.80/210,602.85 = 35,220.78/x
  3. Step 3: Cross multiply
    140,401.80x = 210,602.85 × 35,220.78
  4. Step 4: Simplify right side
    140,401.80x = 7,417,596,647.22
  5. Step 5: Solve for x
    x = 7,417,596,647.22/140,401.80
  6. Step 6: Final answer
    x = 52,831.21

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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.