Home / 287,116.95-396,217.47-159,792.57

Finding the Fourth Proportional to 287,116.95, 396,217.47 and 159,792.57

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Solution

The fourth proportional to 287,116.95, 396,217.47 and 159,792.57 is: 220,511.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,116.95 : 396,217.47 = 159,792.57 : x
  2. Step 2: Convert to fraction form
    287,116.95/396,217.47 = 159,792.57/x
  3. Step 3: Cross multiply
    287,116.95x = 396,217.47 × 159,792.57
  4. Step 4: Simplify right side
    287,116.95x = 63,312,607,810.20
  5. Step 5: Solve for x
    x = 63,312,607,810.20/287,116.95
  6. Step 6: Final answer
    x = 220,511.56

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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.