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Finding the Fourth Proportional to 280,137.67, 386,592.78 and 152,815.93

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Solution

The fourth proportional to 280,137.67, 386,592.78 and 152,815.93 is: 210,887.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,137.67 : 386,592.78 = 152,815.93 : x
  2. Step 2: Convert to fraction form
    280,137.67/386,592.78 = 152,815.93/x
  3. Step 3: Cross multiply
    280,137.67x = 386,592.78 × 152,815.93
  4. Step 4: Simplify right side
    280,137.67x = 59,077,535,206.99
  5. Step 5: Solve for x
    x = 59,077,535,206.99/280,137.67
  6. Step 6: Final answer
    x = 210,887.51

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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.