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Finding the Fourth Proportional to 553,626.04, 830,344.89 and 154,306.57

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Solution

The fourth proportional to 553,626.04, 830,344.89 and 154,306.57 is: 231,433.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,626.04 : 830,344.89 = 154,306.57 : x
  2. Step 2: Convert to fraction form
    553,626.04/830,344.89 = 154,306.57/x
  3. Step 3: Cross multiply
    553,626.04x = 830,344.89 × 154,306.57
  4. Step 4: Simplify right side
    553,626.04x = 128,127,671,892.93
  5. Step 5: Solve for x
    x = 128,127,671,892.93/553,626.04
  6. Step 6: Final answer
    x = 231,433.61

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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.