Home / 280,077.12-386,501.76-152,745.12

Finding the Fourth Proportional to 280,077.12, 386,501.76 and 152,745.12

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Solution

The fourth proportional to 280,077.12, 386,501.76 and 152,745.12 is: 210,785.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,077.12 : 386,501.76 = 152,745.12 : x
  2. Step 2: Convert to fraction form
    280,077.12/386,501.76 = 152,745.12/x
  3. Step 3: Cross multiply
    280,077.12x = 386,501.76 × 152,745.12
  4. Step 4: Simplify right side
    280,077.12x = 59,036,257,711.41
  5. Step 5: Solve for x
    x = 59,036,257,711.41/280,077.12
  6. Step 6: Final answer
    x = 210,785.72

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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.