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Finding the Fourth Proportional to 145,223.70, 217,849 and 56,483.88

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Solution

The fourth proportional to 145,223.70, 217,849 and 56,483.88 is: 84,731.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,223.70 : 217,849 = 56,483.88 : x
  2. Step 2: Convert to fraction form
    145,223.70/217,849 = 56,483.88/x
  3. Step 3: Cross multiply
    145,223.70x = 217,849 × 56,483.88
  4. Step 4: Simplify right side
    145,223.70x = 12,304,956,774.12
  5. Step 5: Solve for x
    x = 12,304,956,774.12/145,223.70
  6. Step 6: Final answer
    x = 84,731.05

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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.