Home / 287,240.40-396,381.06-159,913.26

Finding the Fourth Proportional to 287,240.40, 396,381.06 and 159,913.26

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Solution

The fourth proportional to 287,240.40, 396,381.06 and 159,913.26 is: 220,674.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,240.40 : 396,381.06 = 159,913.26 : x
  2. Step 2: Convert to fraction form
    287,240.40/396,381.06 = 159,913.26/x
  3. Step 3: Cross multiply
    287,240.40x = 396,381.06 × 159,913.26
  4. Step 4: Simplify right side
    287,240.40x = 63,386,587,506.86
  5. Step 5: Solve for x
    x = 63,386,587,506.86/287,240.40
  6. Step 6: Final answer
    x = 220,674.35

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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.