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Finding the Fourth Proportional to 509,090.88, 763,635.98 and 130,011.69

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Solution

The fourth proportional to 509,090.88, 763,635.98 and 130,011.69 is: 195,017.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,090.88 : 763,635.98 = 130,011.69 : x
  2. Step 2: Convert to fraction form
    509,090.88/763,635.98 = 130,011.69/x
  3. Step 3: Cross multiply
    509,090.88x = 763,635.98 × 130,011.69
  4. Step 4: Simplify right side
    509,090.88x = 99,281,604,629.64
  5. Step 5: Solve for x
    x = 99,281,604,629.64/509,090.88
  6. Step 6: Final answer
    x = 195,017.45

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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.