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Finding the Fourth Proportional to 447,064.96, 670,531.80 and 147,555.34

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Solution

The fourth proportional to 447,064.96, 670,531.80 and 147,555.34 is: 221,311.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,064.96 : 670,531.80 = 147,555.34 : x
  2. Step 2: Convert to fraction form
    447,064.96/670,531.80 = 147,555.34/x
  3. Step 3: Cross multiply
    447,064.96x = 670,531.80 × 147,555.34
  4. Step 4: Simplify right side
    447,064.96x = 98,940,547,729.81
  5. Step 5: Solve for x
    x = 98,940,547,729.81/447,064.96
  6. Step 6: Final answer
    x = 221,311.35

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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.