Home / 280,531.49-387,088.08-159,674.63

Finding the Fourth Proportional to 280,531.49, 387,088.08 and 159,674.63

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Solution

The fourth proportional to 280,531.49, 387,088.08 and 159,674.63 is: 220,325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,531.49 : 387,088.08 = 159,674.63 : x
  2. Step 2: Convert to fraction form
    280,531.49/387,088.08 = 159,674.63/x
  3. Step 3: Cross multiply
    280,531.49x = 387,088.08 × 159,674.63
  4. Step 4: Simplify right side
    280,531.49x = 61,808,145,951.41
  5. Step 5: Solve for x
    x = 61,808,145,951.41/280,531.49
  6. Step 6: Final answer
    x = 220,325.16

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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.