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Finding the Fourth Proportional to 223,488.36, 335,225.10 and 97,128.72

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Solution

The fourth proportional to 223,488.36, 335,225.10 and 97,128.72 is: 145,689.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,488.36 : 335,225.10 = 97,128.72 : x
  2. Step 2: Convert to fraction form
    223,488.36/335,225.10 = 97,128.72/x
  3. Step 3: Cross multiply
    223,488.36x = 335,225.10 × 97,128.72
  4. Step 4: Simplify right side
    223,488.36x = 32,559,984,874.87
  5. Step 5: Solve for x
    x = 32,559,984,874.87/223,488.36
  6. Step 6: Final answer
    x = 145,689.85

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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.