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Finding the Fourth Proportional to 212,689.83, 319,033.82 and 62,931.06

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Solution

The fourth proportional to 212,689.83, 319,033.82 and 62,931.06 is: 94,396.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,689.83 : 319,033.82 = 62,931.06 : x
  2. Step 2: Convert to fraction form
    212,689.83/319,033.82 = 62,931.06/x
  3. Step 3: Cross multiply
    212,689.83x = 319,033.82 × 62,931.06
  4. Step 4: Simplify right side
    212,689.83x = 20,077,136,625.78
  5. Step 5: Solve for x
    x = 20,077,136,625.78/212,689.83
  6. Step 6: Final answer
    x = 94,396.32

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1.5x scale

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.