Home / 280,238.95-386,739.08-152,921.53

Finding the Fourth Proportional to 280,238.95, 386,739.08 and 152,921.53

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Solution

The fourth proportional to 280,238.95, 386,739.08 and 152,921.53 is: 211,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,238.95 : 386,739.08 = 152,921.53 : x
  2. Step 2: Convert to fraction form
    280,238.95/386,739.08 = 152,921.53/x
  3. Step 3: Cross multiply
    280,238.95x = 386,739.08 × 152,921.53
  4. Step 4: Simplify right side
    280,238.95x = 59,140,731,239.85
  5. Step 5: Solve for x
    x = 59,140,731,239.85/280,238.95
  6. Step 6: Final answer
    x = 211,036.80

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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.