Home / 281,547.40-421,732.30-131,915.40

Finding the Fourth Proportional to 281,547.40, 421,732.30 and 131,915.40

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Solution

The fourth proportional to 281,547.40, 421,732.30 and 131,915.40 is: 197,597.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,547.40 : 421,732.30 = 131,915.40 : x
  2. Step 2: Convert to fraction form
    281,547.40/421,732.30 = 131,915.40/x
  3. Step 3: Cross multiply
    281,547.40x = 421,732.30 × 131,915.40
  4. Step 4: Simplify right side
    281,547.40x = 55,632,985,047.42
  5. Step 5: Solve for x
    x = 55,632,985,047.42/281,547.40
  6. Step 6: Final answer
    x = 197,597.23

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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.