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Finding the Fourth Proportional to 317,462.79, 438,118.35 and 209,846.19

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Solution

The fourth proportional to 317,462.79, 438,118.35 and 209,846.19 is: 289,600.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,462.79 : 438,118.35 = 209,846.19 : x
  2. Step 2: Convert to fraction form
    317,462.79/438,118.35 = 209,846.19/x
  3. Step 3: Cross multiply
    317,462.79x = 438,118.35 × 209,846.19
  4. Step 4: Simplify right side
    317,462.79x = 91,937,466,516.59
  5. Step 5: Solve for x
    x = 91,937,466,516.59/317,462.79
  6. Step 6: Final answer
    x = 289,600.76

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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.