Home / 280,468.91-387,045.56-153,143.60

Finding the Fourth Proportional to 280,468.91, 387,045.56 and 153,143.60

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Solution

The fourth proportional to 280,468.91, 387,045.56 and 153,143.60 is: 211,337.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,468.91 : 387,045.56 = 153,143.60 : x
  2. Step 2: Convert to fraction form
    280,468.91/387,045.56 = 153,143.60/x
  3. Step 3: Cross multiply
    280,468.91x = 387,045.56 × 153,143.60
  4. Step 4: Simplify right side
    280,468.91x = 59,273,549,656.70
  5. Step 5: Solve for x
    x = 59,273,549,656.70/280,468.91
  6. Step 6: Final answer
    x = 211,337.33

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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.