Home / 219,258.45-328,887.17-86,045.55

Finding the Fourth Proportional to 219,258.45, 328,887.17 and 86,045.55

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Solution

The fourth proportional to 219,258.45, 328,887.17 and 86,045.55 is: 129,068.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,258.45 : 328,887.17 = 86,045.55 : x
  2. Step 2: Convert to fraction form
    219,258.45/328,887.17 = 86,045.55/x
  3. Step 3: Cross multiply
    219,258.45x = 328,887.17 × 86,045.55
  4. Step 4: Simplify right side
    219,258.45x = 28,299,277,430.59
  5. Step 5: Solve for x
    x = 28,299,277,430.59/219,258.45
  6. Step 6: Final answer
    x = 129,068.13

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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.