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Finding the Fourth Proportional to 553,793.19, 830,677.86 and 154,423.32

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Solution

The fourth proportional to 553,793.19, 830,677.86 and 154,423.32 is: 231,631.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,793.19 : 830,677.86 = 154,423.32 : x
  2. Step 2: Convert to fraction form
    553,793.19/830,677.86 = 154,423.32/x
  3. Step 3: Cross multiply
    553,793.19x = 830,677.86 × 154,423.32
  4. Step 4: Simplify right side
    553,793.19x = 128,276,032,991.70
  5. Step 5: Solve for x
    x = 128,276,032,991.70/553,793.19
  6. Step 6: Final answer
    x = 231,631.65

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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.