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Finding the Fourth Proportional to 279,973.67, 420,020.03 and 90,444.90

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Solution

The fourth proportional to 279,973.67, 420,020.03 and 90,444.90 is: 135,686.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,973.67 : 420,020.03 = 90,444.90 : x
  2. Step 2: Convert to fraction form
    279,973.67/420,020.03 = 90,444.90/x
  3. Step 3: Cross multiply
    279,973.67x = 420,020.03 × 90,444.90
  4. Step 4: Simplify right side
    279,973.67x = 37,988,671,412.53
  5. Step 5: Solve for x
    x = 37,988,671,412.53/279,973.67
  6. Step 6: Final answer
    x = 135,686.59

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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.