Home / 287,071.06-396,154.95-158,006.78

Finding the Fourth Proportional to 287,071.06, 396,154.95 and 158,006.78

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Solution

The fourth proportional to 287,071.06, 396,154.95 and 158,006.78 is: 218,047.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,071.06 : 396,154.95 = 158,006.78 : x
  2. Step 2: Convert to fraction form
    287,071.06/396,154.95 = 158,006.78/x
  3. Step 3: Cross multiply
    287,071.06x = 396,154.95 × 158,006.78
  4. Step 4: Simplify right side
    287,071.06x = 62,595,168,030.56
  5. Step 5: Solve for x
    x = 62,595,168,030.56/287,071.06
  6. Step 6: Final answer
    x = 218,047.64

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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.