Home / 280,260.78-386,756.25-152,928.18

Finding the Fourth Proportional to 280,260.78, 386,756.25 and 152,928.18

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Solution

The fourth proportional to 280,260.78, 386,756.25 and 152,928.18 is: 211,038.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,260.78 : 386,756.25 = 152,928.18 : x
  2. Step 2: Convert to fraction form
    280,260.78/386,756.25 = 152,928.18/x
  3. Step 3: Cross multiply
    280,260.78x = 386,756.25 × 152,928.18
  4. Step 4: Simplify right side
    280,260.78x = 59,145,929,416.13
  5. Step 5: Solve for x
    x = 59,145,929,416.13/280,260.78
  6. Step 6: Final answer
    x = 211,038.91

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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.