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Finding the Fourth Proportional to 295,247.40, 442,871.10 and 137,783.40

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Solution

The fourth proportional to 295,247.40, 442,871.10 and 137,783.40 is: 206,675.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,247.40 : 442,871.10 = 137,783.40 : x
  2. Step 2: Convert to fraction form
    295,247.40/442,871.10 = 137,783.40/x
  3. Step 3: Cross multiply
    295,247.40x = 442,871.10 × 137,783.40
  4. Step 4: Simplify right side
    295,247.40x = 61,020,285,919.74
  5. Step 5: Solve for x
    x = 61,020,285,919.74/295,247.40
  6. Step 6: Final answer
    x = 206,675.10

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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.