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Finding the Fourth Proportional to 279,322.40, 420,020.40 and 233,703.20

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Solution

The fourth proportional to 279,322.40, 420,020.40 and 233,703.20 is: 351,422.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,322.40 : 420,020.40 = 233,703.20 : x
  2. Step 2: Convert to fraction form
    279,322.40/420,020.40 = 233,703.20/x
  3. Step 3: Cross multiply
    279,322.40x = 420,020.40 × 233,703.20
  4. Step 4: Simplify right side
    279,322.40x = 98,160,111,545.28
  5. Step 5: Solve for x
    x = 98,160,111,545.28/279,322.40
  6. Step 6: Final answer
    x = 351,422.27

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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.