Home / 345,972.94-518,264.66-172,341.72

Finding the Fourth Proportional to 345,972.94, 518,264.66 and 172,341.72

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Solution

The fourth proportional to 345,972.94, 518,264.66 and 172,341.72 is: 258,166.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,972.94 : 518,264.66 = 172,341.72 : x
  2. Step 2: Convert to fraction form
    345,972.94/518,264.66 = 172,341.72/x
  3. Step 3: Cross multiply
    345,972.94x = 518,264.66 × 172,341.72
  4. Step 4: Simplify right side
    345,972.94x = 89,318,621,407.36
  5. Step 5: Solve for x
    x = 89,318,621,407.36/345,972.94
  6. Step 6: Final answer
    x = 258,166.50

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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.