Home / 280,240.20-386,740.80-152,922.78

Finding the Fourth Proportional to 280,240.20, 386,740.80 and 152,922.78

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Solution

The fourth proportional to 280,240.20, 386,740.80 and 152,922.78 is: 211,038.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,240.20 : 386,740.80 = 152,922.78 : x
  2. Step 2: Convert to fraction form
    280,240.20/386,740.80 = 152,922.78/x
  3. Step 3: Cross multiply
    280,240.20x = 386,740.80 × 152,922.78
  4. Step 4: Simplify right side
    280,240.20x = 59,141,478,275.42
  5. Step 5: Solve for x
    x = 59,141,478,275.42/280,240.20
  6. Step 6: Final answer
    x = 211,038.52

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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.