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Finding the Fourth Proportional to 210,008.80, 314,811.60 and 69,695.20

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Solution

The fourth proportional to 210,008.80, 314,811.60 and 69,695.20 is: 104,475.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,008.80 : 314,811.60 = 69,695.20 : x
  2. Step 2: Convert to fraction form
    210,008.80/314,811.60 = 69,695.20/x
  3. Step 3: Cross multiply
    210,008.80x = 314,811.60 × 69,695.20
  4. Step 4: Simplify right side
    210,008.80x = 21,940,857,424.32
  5. Step 5: Solve for x
    x = 21,940,857,424.32/210,008.80
  6. Step 6: Final answer
    x = 104,475.90

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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.