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Finding the Fourth Proportional to 280,265.96, 386,775.24 and 152,949.74

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Solution

The fourth proportional to 280,265.96, 386,775.24 and 152,949.74 is: 211,075.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,265.96 : 386,775.24 = 152,949.74 : x
  2. Step 2: Convert to fraction form
    280,265.96/386,775.24 = 152,949.74/x
  3. Step 3: Cross multiply
    280,265.96x = 386,775.24 × 152,949.74
  4. Step 4: Simplify right side
    280,265.96x = 59,157,172,396.44
  5. Step 5: Solve for x
    x = 59,157,172,396.44/280,265.96
  6. Step 6: Final answer
    x = 211,075.12

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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.