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Finding the Fourth Proportional to 445,869.60, 668,885.40 and 146,266.80

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Solution

The fourth proportional to 445,869.60, 668,885.40 and 146,266.80 is: 219,426.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,869.60 : 668,885.40 = 146,266.80 : x
  2. Step 2: Convert to fraction form
    445,869.60/668,885.40 = 146,266.80/x
  3. Step 3: Cross multiply
    445,869.60x = 668,885.40 × 146,266.80
  4. Step 4: Simplify right side
    445,869.60x = 97,835,727,024.72
  5. Step 5: Solve for x
    x = 97,835,727,024.72/445,869.60
  6. Step 6: Final answer
    x = 219,426.77

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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.