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Finding the Fourth Proportional to 312,364.74, 468,547.11 and 75,707.42

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Solution

The fourth proportional to 312,364.74, 468,547.11 and 75,707.42 is: 113,561.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,364.74 : 468,547.11 = 75,707.42 : x
  2. Step 2: Convert to fraction form
    312,364.74/468,547.11 = 75,707.42/x
  3. Step 3: Cross multiply
    312,364.74x = 468,547.11 × 75,707.42
  4. Step 4: Simplify right side
    312,364.74x = 35,472,492,846.56
  5. Step 5: Solve for x
    x = 35,472,492,846.56/312,364.74
  6. Step 6: Final answer
    x = 113,561.13

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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.