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Finding the Fourth Proportional to 265,345.92, 398,017.98 and 107,574

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Solution

The fourth proportional to 265,345.92, 398,017.98 and 107,574 is: 161,360.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,345.92 : 398,017.98 = 107,574 : x
  2. Step 2: Convert to fraction form
    265,345.92/398,017.98 = 107,574/x
  3. Step 3: Cross multiply
    265,345.92x = 398,017.98 × 107,574
  4. Step 4: Simplify right side
    265,345.92x = 42,816,386,180.52
  5. Step 5: Solve for x
    x = 42,816,386,180.52/265,345.92
  6. Step 6: Final answer
    x = 161,360.64

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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.