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Finding the Fourth Proportional to 317,745.84, 438,196.64 and 215,923.92

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Solution

The fourth proportional to 317,745.84, 438,196.64 and 215,923.92 is: 297,776.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,745.84 : 438,196.64 = 215,923.92 : x
  2. Step 2: Convert to fraction form
    317,745.84/438,196.64 = 215,923.92/x
  3. Step 3: Cross multiply
    317,745.84x = 438,196.64 × 215,923.92
  4. Step 4: Simplify right side
    317,745.84x = 94,617,136,239.63
  5. Step 5: Solve for x
    x = 94,617,136,239.63/317,745.84
  6. Step 6: Final answer
    x = 297,776.16

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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.