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Finding the Fourth Proportional to 207,547.80, 311,321.70 and 181,303.80

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Solution

The fourth proportional to 207,547.80, 311,321.70 and 181,303.80 is: 271,955.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,547.80 : 311,321.70 = 181,303.80 : x
  2. Step 2: Convert to fraction form
    207,547.80/311,321.70 = 181,303.80/x
  3. Step 3: Cross multiply
    207,547.80x = 311,321.70 × 181,303.80
  4. Step 4: Simplify right side
    207,547.80x = 56,443,807,232.46
  5. Step 5: Solve for x
    x = 56,443,807,232.46/207,547.80
  6. Step 6: Final answer
    x = 271,955.70

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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.