Home / 281,316.24-388,221-158,815.08

Finding the Fourth Proportional to 281,316.24, 388,221 and 158,815.08

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Solution

The fourth proportional to 281,316.24, 388,221 and 158,815.08 is: 219,167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,316.24 : 388,221 = 158,815.08 : x
  2. Step 2: Convert to fraction form
    281,316.24/388,221 = 158,815.08/x
  3. Step 3: Cross multiply
    281,316.24x = 388,221 × 158,815.08
  4. Step 4: Simplify right side
    281,316.24x = 61,655,349,172.68
  5. Step 5: Solve for x
    x = 61,655,349,172.68/281,316.24
  6. Step 6: Final answer
    x = 219,167.40

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Double scale
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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.