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Finding the Fourth Proportional to 345,718.72, 518,574.18 and 89,550.16

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Solution

The fourth proportional to 345,718.72, 518,574.18 and 89,550.16 is: 134,324.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,718.72 : 518,574.18 = 89,550.16 : x
  2. Step 2: Convert to fraction form
    345,718.72/518,574.18 = 89,550.16/x
  3. Step 3: Cross multiply
    345,718.72x = 518,574.18 × 89,550.16
  4. Step 4: Simplify right side
    345,718.72x = 46,438,400,790.87
  5. Step 5: Solve for x
    x = 46,438,400,790.87/345,718.72
  6. Step 6: Final answer
    x = 134,324.23

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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.