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Finding the Fourth Proportional to 516,580.80, 774,980.55 and 156,722.10

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Solution

The fourth proportional to 516,580.80, 774,980.55 and 156,722.10 is: 235,116.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,580.80 : 774,980.55 = 156,722.10 : x
  2. Step 2: Convert to fraction form
    516,580.80/774,980.55 = 156,722.10/x
  3. Step 3: Cross multiply
    516,580.80x = 774,980.55 × 156,722.10
  4. Step 4: Simplify right side
    516,580.80x = 121,456,579,255.16
  5. Step 5: Solve for x
    x = 121,456,579,255.16/516,580.80
  6. Step 6: Final answer
    x = 235,116.32

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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.