Home / 208,547.40-312,966.90-133,849.20

Finding the Fourth Proportional to 208,547.40, 312,966.90 and 133,849.20

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Solution

The fourth proportional to 208,547.40, 312,966.90 and 133,849.20 is: 200,867.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,547.40 : 312,966.90 = 133,849.20 : x
  2. Step 2: Convert to fraction form
    208,547.40/312,966.90 = 133,849.20/x
  3. Step 3: Cross multiply
    208,547.40x = 312,966.90 × 133,849.20
  4. Step 4: Simplify right side
    208,547.40x = 41,890,369,191.48
  5. Step 5: Solve for x
    x = 41,890,369,191.48/208,547.40
  6. Step 6: Final answer
    x = 200,867.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.