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Finding the Fourth Proportional to 279,146.17, 416,828.45 and 221,574.16

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Solution

The fourth proportional to 279,146.17, 416,828.45 and 221,574.16 is: 330,860.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,146.17 : 416,828.45 = 221,574.16 : x
  2. Step 2: Convert to fraction form
    279,146.17/416,828.45 = 221,574.16/x
  3. Step 3: Cross multiply
    279,146.17x = 416,828.45 × 221,574.16
  4. Step 4: Simplify right side
    279,146.17x = 92,358,413,118.92
  5. Step 5: Solve for x
    x = 92,358,413,118.92/279,146.17
  6. Step 6: Final answer
    x = 330,860.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.