Home / 280,749.08-387,433.91-153,424.68

Finding the Fourth Proportional to 280,749.08, 387,433.91 and 153,424.68

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Solution

The fourth proportional to 280,749.08, 387,433.91 and 153,424.68 is: 211,726.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,749.08 : 387,433.91 = 153,424.68 : x
  2. Step 2: Convert to fraction form
    280,749.08/387,433.91 = 153,424.68/x
  3. Step 3: Cross multiply
    280,749.08x = 387,433.91 × 153,424.68
  4. Step 4: Simplify right side
    280,749.08x = 59,441,922,895.78
  5. Step 5: Solve for x
    x = 59,441,922,895.78/280,749.08
  6. Step 6: Final answer
    x = 211,726.16

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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.