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Finding the Fourth Proportional to 345,617.52, 518,018.92 and 155,855.68

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Solution

The fourth proportional to 345,617.52, 518,018.92 and 155,855.68 is: 233,599.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,617.52 : 518,018.92 = 155,855.68 : x
  2. Step 2: Convert to fraction form
    345,617.52/518,018.92 = 155,855.68/x
  3. Step 3: Cross multiply
    345,617.52x = 518,018.92 × 155,855.68
  4. Step 4: Simplify right side
    345,617.52x = 80,736,191,029.47
  5. Step 5: Solve for x
    x = 80,736,191,029.47/345,617.52
  6. Step 6: Final answer
    x = 233,599.82

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1.5x scale

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.