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Finding the Fourth Proportional to 317,304.72, 437,900.88 and 209,686.08

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Solution

The fourth proportional to 317,304.72, 437,900.88 and 209,686.08 is: 289,380.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,304.72 : 437,900.88 = 209,686.08 : x
  2. Step 2: Convert to fraction form
    317,304.72/437,900.88 = 209,686.08/x
  3. Step 3: Cross multiply
    317,304.72x = 437,900.88 × 209,686.08
  4. Step 4: Simplify right side
    317,304.72x = 91,821,718,955.75
  5. Step 5: Solve for x
    x = 91,821,718,955.75/317,304.72
  6. Step 6: Final answer
    x = 289,380.25

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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.