Home / 219,030.68-328,548.63-85,973.60

Finding the Fourth Proportional to 219,030.68, 328,548.63 and 85,973.60

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Solution

The fourth proportional to 219,030.68, 328,548.63 and 85,973.60 is: 128,961.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,030.68 : 328,548.63 = 85,973.60 : x
  2. Step 2: Convert to fraction form
    219,030.68/328,548.63 = 85,973.60/x
  3. Step 3: Cross multiply
    219,030.68x = 328,548.63 × 85,973.60
  4. Step 4: Simplify right side
    219,030.68x = 28,246,508,496.17
  5. Step 5: Solve for x
    x = 28,246,508,496.17/219,030.68
  6. Step 6: Final answer
    x = 128,961.42

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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.