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Finding the Fourth Proportional to 202,547.75, 279,521.51 and 111,909.56

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Solution

The fourth proportional to 202,547.75, 279,521.51 and 111,909.56 is: 154,438.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,547.75 : 279,521.51 = 111,909.56 : x
  2. Step 2: Convert to fraction form
    202,547.75/279,521.51 = 111,909.56/x
  3. Step 3: Cross multiply
    202,547.75x = 279,521.51 × 111,909.56
  4. Step 4: Simplify right side
    202,547.75x = 31,281,127,237.48
  5. Step 5: Solve for x
    x = 31,281,127,237.48/202,547.75
  6. Step 6: Final answer
    x = 154,438.29

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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.