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Finding the Fourth Proportional to 305,246.42, 421,233.51 and 176,174.77

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Solution

The fourth proportional to 305,246.42, 421,233.51 and 176,174.77 is: 243,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,246.42 : 421,233.51 = 176,174.77 : x
  2. Step 2: Convert to fraction form
    305,246.42/421,233.51 = 176,174.77/x
  3. Step 3: Cross multiply
    305,246.42x = 421,233.51 × 176,174.77
  4. Step 4: Simplify right side
    305,246.42x = 74,210,718,322.65
  5. Step 5: Solve for x
    x = 74,210,718,322.65/305,246.42
  6. Step 6: Final answer
    x = 243,117.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.