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Finding the Fourth Proportional to 219,343.80, 328,988.16 and 69,599.64

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Solution

The fourth proportional to 219,343.80, 328,988.16 and 69,599.64 is: 104,390.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,343.80 : 328,988.16 = 69,599.64 : x
  2. Step 2: Convert to fraction form
    219,343.80/328,988.16 = 69,599.64/x
  3. Step 3: Cross multiply
    219,343.80x = 328,988.16 × 69,599.64
  4. Step 4: Simplify right side
    219,343.80x = 22,897,457,500.26
  5. Step 5: Solve for x
    x = 22,897,457,500.26/219,343.80
  6. Step 6: Final answer
    x = 104,390.72

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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.