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Finding the Fourth Proportional to 442,813.20, 664,219.80 and 376,547.10

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Solution

The fourth proportional to 442,813.20, 664,219.80 and 376,547.10 is: 564,820.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,813.20 : 664,219.80 = 376,547.10 : x
  2. Step 2: Convert to fraction form
    442,813.20/664,219.80 = 376,547.10/x
  3. Step 3: Cross multiply
    442,813.20x = 664,219.80 × 376,547.10
  4. Step 4: Simplify right side
    442,813.20x = 250,110,039,452.58
  5. Step 5: Solve for x
    x = 250,110,039,452.58/442,813.20
  6. Step 6: Final answer
    x = 564,820.65

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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.