Home / 218,973.38-328,509.27-78,732

Finding the Fourth Proportional to 218,973.38, 328,509.27 and 78,732

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Solution

The fourth proportional to 218,973.38, 328,509.27 and 78,732 is: 118,115.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,973.38 : 328,509.27 = 78,732 : x
  2. Step 2: Convert to fraction form
    218,973.38/328,509.27 = 78,732/x
  3. Step 3: Cross multiply
    218,973.38x = 328,509.27 × 78,732
  4. Step 4: Simplify right side
    218,973.38x = 25,864,191,845.64
  5. Step 5: Solve for x
    x = 25,864,191,845.64/218,973.38
  6. Step 6: Final answer
    x = 118,115.69

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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.