Home / 219,973.40-329,895.30-86,809.40

Finding the Fourth Proportional to 219,973.40, 329,895.30 and 86,809.40

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Solution

The fourth proportional to 219,973.40, 329,895.30 and 86,809.40 is: 130,188.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,973.40 : 329,895.30 = 86,809.40 : x
  2. Step 2: Convert to fraction form
    219,973.40/329,895.30 = 86,809.40/x
  3. Step 3: Cross multiply
    219,973.40x = 329,895.30 × 86,809.40
  4. Step 4: Simplify right side
    219,973.40x = 28,638,013,055.82
  5. Step 5: Solve for x
    x = 28,638,013,055.82/219,973.40
  6. Step 6: Final answer
    x = 130,188.53

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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.