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Finding the Fourth Proportional to 369,145, 553,809.98 and 106,489

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Solution

The fourth proportional to 369,145, 553,809.98 and 106,489 is: 159,760.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,145 : 553,809.98 = 106,489 : x
  2. Step 2: Convert to fraction form
    369,145/553,809.98 = 106,489/x
  3. Step 3: Cross multiply
    369,145x = 553,809.98 × 106,489
  4. Step 4: Simplify right side
    369,145x = 58,974,670,960.22
  5. Step 5: Solve for x
    x = 58,974,670,960.22/369,145
  6. Step 6: Final answer
    x = 159,760.18

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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.