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Finding the Fourth Proportional to 509,641.40, 764,231.70 and 229,014.20

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Solution

The fourth proportional to 509,641.40, 764,231.70 and 229,014.20 is: 343,417.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,641.40 : 764,231.70 = 229,014.20 : x
  2. Step 2: Convert to fraction form
    509,641.40/764,231.70 = 229,014.20/x
  3. Step 3: Cross multiply
    509,641.40x = 764,231.70 × 229,014.20
  4. Step 4: Simplify right side
    509,641.40x = 175,019,911,390.14
  5. Step 5: Solve for x
    x = 175,019,911,390.14/509,641.40
  6. Step 6: Final answer
    x = 343,417.77

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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.