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Finding the Fourth Proportional to 553,753.67, 830,677.34 and 154,394.78

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Solution

The fourth proportional to 553,753.67, 830,677.34 and 154,394.78 is: 231,605.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,753.67 : 830,677.34 = 154,394.78 : x
  2. Step 2: Convert to fraction form
    553,753.67/830,677.34 = 154,394.78/x
  3. Step 3: Cross multiply
    553,753.67x = 830,677.34 × 154,394.78
  4. Step 4: Simplify right side
    553,753.67x = 128,252,241,392.89
  5. Step 5: Solve for x
    x = 128,252,241,392.89/553,753.67
  6. Step 6: Final answer
    x = 231,605.22

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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.