Home / 280,529.49-387,085.32-159,672.63

Finding the Fourth Proportional to 280,529.49, 387,085.32 and 159,672.63

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Solution

The fourth proportional to 280,529.49, 387,085.32 and 159,672.63 is: 220,322.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,529.49 : 387,085.32 = 159,672.63 : x
  2. Step 2: Convert to fraction form
    280,529.49/387,085.32 = 159,672.63/x
  3. Step 3: Cross multiply
    280,529.49x = 387,085.32 × 159,672.63
  4. Step 4: Simplify right side
    280,529.49x = 61,806,931,078.79
  5. Step 5: Solve for x
    x = 61,806,931,078.79/280,529.49
  6. Step 6: Final answer
    x = 220,322.40

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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.