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Finding the Fourth Proportional to 278,892.40, 384,860.68 and 151,565.26

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Solution

The fourth proportional to 278,892.40, 384,860.68 and 151,565.26 is: 209,154.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,892.40 : 384,860.68 = 151,565.26 : x
  2. Step 2: Convert to fraction form
    278,892.40/384,860.68 = 151,565.26/x
  3. Step 3: Cross multiply
    278,892.40x = 384,860.68 × 151,565.26
  4. Step 4: Simplify right side
    278,892.40x = 58,331,509,027.98
  5. Step 5: Solve for x
    x = 58,331,509,027.98/278,892.40
  6. Step 6: Final answer
    x = 209,154.17

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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.