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Finding the Fourth Proportional to 202,878.48, 279,980.55 and 112,232.89

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Solution

The fourth proportional to 202,878.48, 279,980.55 and 112,232.89 is: 154,885.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,878.48 : 279,980.55 = 112,232.89 : x
  2. Step 2: Convert to fraction form
    202,878.48/279,980.55 = 112,232.89/x
  3. Step 3: Cross multiply
    202,878.48x = 279,980.55 × 112,232.89
  4. Step 4: Simplify right side
    202,878.48x = 31,423,025,570.34
  5. Step 5: Solve for x
    x = 31,423,025,570.34/202,878.48
  6. Step 6: Final answer
    x = 154,885.95

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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.