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Finding the Fourth Proportional to 202,521.63, 279,478.95 and 111,877.64

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Solution

The fourth proportional to 202,521.63, 279,478.95 and 111,877.64 is: 154,390.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,521.63 : 279,478.95 = 111,877.64 : x
  2. Step 2: Convert to fraction form
    202,521.63/279,478.95 = 111,877.64/x
  3. Step 3: Cross multiply
    202,521.63x = 279,478.95 × 111,877.64
  4. Step 4: Simplify right side
    202,521.63x = 31,267,444,547.91
  5. Step 5: Solve for x
    x = 31,267,444,547.91/202,521.63
  6. Step 6: Final answer
    x = 154,390.64

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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.