Home / 280,212.76-386,689.62-152,885.80

Finding the Fourth Proportional to 280,212.76, 386,689.62 and 152,885.80

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Solution

The fourth proportional to 280,212.76, 386,689.62 and 152,885.80 is: 210,980.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,212.76 : 386,689.62 = 152,885.80 : x
  2. Step 2: Convert to fraction form
    280,212.76/386,689.62 = 152,885.80/x
  3. Step 3: Cross multiply
    280,212.76x = 386,689.62 × 152,885.80
  4. Step 4: Simplify right side
    280,212.76x = 59,119,351,905.40
  5. Step 5: Solve for x
    x = 59,119,351,905.40/280,212.76
  6. Step 6: Final answer
    x = 210,980.23

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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.