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Finding the Fourth Proportional to 157,278.30, 220,811.70 and 157,278.30

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Solution

The fourth proportional to 157,278.30, 220,811.70 and 157,278.30 is: 220,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,278.30 : 220,811.70 = 157,278.30 : x
  2. Step 2: Convert to fraction form
    157,278.30/220,811.70 = 157,278.30/x
  3. Step 3: Cross multiply
    157,278.30x = 220,811.70 × 157,278.30
  4. Step 4: Simplify right side
    157,278.30x = 34,728,888,796.11
  5. Step 5: Solve for x
    x = 34,728,888,796.11/157,278.30
  6. Step 6: Final answer
    x = 220,811.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.