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Finding the Fourth Proportional to 279,605.64, 385,860.14 and 152,281.12

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Solution

The fourth proportional to 279,605.64, 385,860.14 and 152,281.12 is: 210,150.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,605.64 : 385,860.14 = 152,281.12 : x
  2. Step 2: Convert to fraction form
    279,605.64/385,860.14 = 152,281.12/x
  3. Step 3: Cross multiply
    279,605.64x = 385,860.14 × 152,281.12
  4. Step 4: Simplify right side
    279,605.64x = 58,759,214,282.56
  5. Step 5: Solve for x
    x = 58,759,214,282.56/279,605.64
  6. Step 6: Final answer
    x = 210,150.32

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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.