Home / 347,711.60-521,567.40-111,078.20

Finding the Fourth Proportional to 347,711.60, 521,567.40 and 111,078.20

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Solution

The fourth proportional to 347,711.60, 521,567.40 and 111,078.20 is: 166,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,711.60 : 521,567.40 = 111,078.20 : x
  2. Step 2: Convert to fraction form
    347,711.60/521,567.40 = 111,078.20/x
  3. Step 3: Cross multiply
    347,711.60x = 521,567.40 × 111,078.20
  4. Step 4: Simplify right side
    347,711.60x = 57,934,767,970.68
  5. Step 5: Solve for x
    x = 57,934,767,970.68/347,711.60
  6. Step 6: Final answer
    x = 166,617.30

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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.