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Finding the Fourth Proportional to 219,085.74, 328,631.58 and 76,925.34

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Solution

The fourth proportional to 219,085.74, 328,631.58 and 76,925.34 is: 115,389.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,085.74 : 328,631.58 = 76,925.34 : x
  2. Step 2: Convert to fraction form
    219,085.74/328,631.58 = 76,925.34/x
  3. Step 3: Cross multiply
    219,085.74x = 328,631.58 × 76,925.34
  4. Step 4: Simplify right side
    219,085.74x = 25,280,096,026.24
  5. Step 5: Solve for x
    x = 25,280,096,026.24/219,085.74
  6. Step 6: Final answer
    x = 115,389.05

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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.