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Finding the Fourth Proportional to 280,065.62, 386,485.89 and 152,733.62

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Solution

The fourth proportional to 280,065.62, 386,485.89 and 152,733.62 is: 210,769.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,065.62 : 386,485.89 = 152,733.62 : x
  2. Step 2: Convert to fraction form
    280,065.62/386,485.89 = 152,733.62/x
  3. Step 3: Cross multiply
    280,065.62x = 386,485.89 × 152,733.62
  4. Step 4: Simplify right side
    280,065.62x = 59,029,389,058.62
  5. Step 5: Solve for x
    x = 59,029,389,058.62/280,065.62
  6. Step 6: Final answer
    x = 210,769.85

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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.