Home / 219,246.60-328,742.28-85,970.64

Finding the Fourth Proportional to 219,246.60, 328,742.28 and 85,970.64

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Solution

The fourth proportional to 219,246.60, 328,742.28 and 85,970.64 is: 128,905.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,246.60 : 328,742.28 = 85,970.64 : x
  2. Step 2: Convert to fraction form
    219,246.60/328,742.28 = 85,970.64/x
  3. Step 3: Cross multiply
    219,246.60x = 328,742.28 × 85,970.64
  4. Step 4: Simplify right side
    219,246.60x = 28,262,184,206.66
  5. Step 5: Solve for x
    x = 28,262,184,206.66/219,246.60
  6. Step 6: Final answer
    x = 128,905.92

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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.