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Finding the Fourth Proportional to 538,158.60, 807,237.90 and 313,772.40

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Solution

The fourth proportional to 538,158.60, 807,237.90 and 313,772.40 is: 470,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,158.60 : 807,237.90 = 313,772.40 : x
  2. Step 2: Convert to fraction form
    538,158.60/807,237.90 = 313,772.40/x
  3. Step 3: Cross multiply
    538,158.60x = 807,237.90 × 313,772.40
  4. Step 4: Simplify right side
    538,158.60x = 253,288,973,253.96
  5. Step 5: Solve for x
    x = 253,288,973,253.96/538,158.60
  6. Step 6: Final answer
    x = 470,658.60

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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.