Home / 514,643.28-771,941.16-140,665.20

Finding the Fourth Proportional to 514,643.28, 771,941.16 and 140,665.20

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Solution

The fourth proportional to 514,643.28, 771,941.16 and 140,665.20 is: 210,991.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,643.28 : 771,941.16 = 140,665.20 : x
  2. Step 2: Convert to fraction form
    514,643.28/771,941.16 = 140,665.20/x
  3. Step 3: Cross multiply
    514,643.28x = 771,941.16 × 140,665.20
  4. Step 4: Simplify right side
    514,643.28x = 108,585,257,659.63
  5. Step 5: Solve for x
    x = 108,585,257,659.63/514,643.28
  6. Step 6: Final answer
    x = 210,991.31

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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.