Home / 347,915.90-521,570.10-134,829.20

Finding the Fourth Proportional to 347,915.90, 521,570.10 and 134,829.20

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Solution

The fourth proportional to 347,915.90, 521,570.10 and 134,829.20 is: 202,126.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,915.90 : 521,570.10 = 134,829.20 : x
  2. Step 2: Convert to fraction form
    347,915.90/521,570.10 = 134,829.20/x
  3. Step 3: Cross multiply
    347,915.90x = 521,570.10 × 134,829.20
  4. Step 4: Simplify right side
    347,915.90x = 70,322,879,326.92
  5. Step 5: Solve for x
    x = 70,322,879,326.92/347,915.90
  6. Step 6: Final answer
    x = 202,126.09

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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.