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Finding the Fourth Proportional to 219,762.90, 329,579.55 and 86,598.90

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Solution

The fourth proportional to 219,762.90, 329,579.55 and 86,598.90 is: 129,872.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,762.90 : 329,579.55 = 86,598.90 : x
  2. Step 2: Convert to fraction form
    219,762.90/329,579.55 = 86,598.90/x
  3. Step 3: Cross multiply
    219,762.90x = 329,579.55 × 86,598.90
  4. Step 4: Simplify right side
    219,762.90x = 28,541,226,492.50
  5. Step 5: Solve for x
    x = 28,541,226,492.50/219,762.90
  6. Step 6: Final answer
    x = 129,872.82

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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.