Home / 345,330.10-476,578.11-209,376.46

Finding the Fourth Proportional to 345,330.10, 476,578.11 and 209,376.46

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Solution

The fourth proportional to 345,330.10, 476,578.11 and 209,376.46 is: 288,953.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,330.10 : 476,578.11 = 209,376.46 : x
  2. Step 2: Convert to fraction form
    345,330.10/476,578.11 = 209,376.46/x
  3. Step 3: Cross multiply
    345,330.10x = 476,578.11 × 209,376.46
  4. Step 4: Simplify right side
    345,330.10x = 99,784,237,585.29
  5. Step 5: Solve for x
    x = 99,784,237,585.29/345,330.10
  6. Step 6: Final answer
    x = 288,953.20

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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.