Home / 317,822.08-438,618-196,987.12

Finding the Fourth Proportional to 317,822.08, 438,618 and 196,987.12

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Solution

The fourth proportional to 317,822.08, 438,618 and 196,987.12 is: 271,856.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,822.08 : 438,618 = 196,987.12 : x
  2. Step 2: Convert to fraction form
    317,822.08/438,618 = 196,987.12/x
  3. Step 3: Cross multiply
    317,822.08x = 438,618 × 196,987.12
  4. Step 4: Simplify right side
    317,822.08x = 86,402,096,600.16
  5. Step 5: Solve for x
    x = 86,402,096,600.16/317,822.08
  6. Step 6: Final answer
    x = 271,856.81

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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.