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Finding the Fourth Proportional to 369,900.72, 553,391.19 and 285,017.81

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Solution

The fourth proportional to 369,900.72, 553,391.19 and 285,017.81 is: 426,401.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,900.72 : 553,391.19 = 285,017.81 : x
  2. Step 2: Convert to fraction form
    369,900.72/553,391.19 = 285,017.81/x
  3. Step 3: Cross multiply
    369,900.72x = 553,391.19 × 285,017.81
  4. Step 4: Simplify right side
    369,900.72x = 157,726,342,280.14
  5. Step 5: Solve for x
    x = 157,726,342,280.14/369,900.72
  6. Step 6: Final answer
    x = 426,401.83

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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.