Home / 280,468.66-387,045.21-153,143.35

Finding the Fourth Proportional to 280,468.66, 387,045.21 and 153,143.35

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Solution

The fourth proportional to 280,468.66, 387,045.21 and 153,143.35 is: 211,336.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,468.66 : 387,045.21 = 153,143.35 : x
  2. Step 2: Convert to fraction form
    280,468.66/387,045.21 = 153,143.35/x
  3. Step 3: Cross multiply
    280,468.66x = 387,045.21 × 153,143.35
  4. Step 4: Simplify right side
    280,468.66x = 59,273,400,060.85
  5. Step 5: Solve for x
    x = 59,273,400,060.85/280,468.66
  6. Step 6: Final answer
    x = 211,336.98

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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.