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Finding the Fourth Proportional to 145,263.79, 217,909.85 and 56,524.51

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Solution

The fourth proportional to 145,263.79, 217,909.85 and 56,524.51 is: 84,792.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,263.79 : 217,909.85 = 56,524.51 : x
  2. Step 2: Convert to fraction form
    145,263.79/217,909.85 = 56,524.51/x
  3. Step 3: Cross multiply
    145,263.79x = 217,909.85 × 56,524.51
  4. Step 4: Simplify right side
    145,263.79x = 12,317,247,495.42
  5. Step 5: Solve for x
    x = 12,317,247,495.42/145,263.79
  6. Step 6: Final answer
    x = 84,792.28

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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.