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Finding the Fourth Proportional to 343,080.16, 514,669.86 and 129,790.24

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Solution

The fourth proportional to 343,080.16, 514,669.86 and 129,790.24 is: 194,704.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,080.16 : 514,669.86 = 129,790.24 : x
  2. Step 2: Convert to fraction form
    343,080.16/514,669.86 = 129,790.24/x
  3. Step 3: Cross multiply
    343,080.16x = 514,669.86 × 129,790.24
  4. Step 4: Simplify right side
    343,080.16x = 66,799,124,650.17
  5. Step 5: Solve for x
    x = 66,799,124,650.17/343,080.16
  6. Step 6: Final answer
    x = 194,704.13

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1.5x scale

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.