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Finding the Fourth Proportional to 210,253.76, 315,210.36 and 143,525.84

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Solution

The fourth proportional to 210,253.76, 315,210.36 and 143,525.84 is: 215,172.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,253.76 : 315,210.36 = 143,525.84 : x
  2. Step 2: Convert to fraction form
    210,253.76/315,210.36 = 143,525.84/x
  3. Step 3: Cross multiply
    210,253.76x = 315,210.36 × 143,525.84
  4. Step 4: Simplify right side
    210,253.76x = 45,240,831,695.70
  5. Step 5: Solve for x
    x = 45,240,831,695.70/210,253.76
  6. Step 6: Final answer
    x = 215,172.52

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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.