Home / 316,440.34-436,899.08-187,420.30

Finding the Fourth Proportional to 316,440.34, 436,899.08 and 187,420.30

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Solution

The fourth proportional to 316,440.34, 436,899.08 and 187,420.30 is: 258,765.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,440.34 : 436,899.08 = 187,420.30 : x
  2. Step 2: Convert to fraction form
    316,440.34/436,899.08 = 187,420.30/x
  3. Step 3: Cross multiply
    316,440.34x = 436,899.08 × 187,420.30
  4. Step 4: Simplify right side
    316,440.34x = 81,883,756,019.63
  5. Step 5: Solve for x
    x = 81,883,756,019.63/316,440.34
  6. Step 6: Final answer
    x = 258,765.23

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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.