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Finding the Fourth Proportional to 496,515.90, 745,081.65 and 260,028.30

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Solution

The fourth proportional to 496,515.90, 745,081.65 and 260,028.30 is: 390,203.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,515.90 : 745,081.65 = 260,028.30 : x
  2. Step 2: Convert to fraction form
    496,515.90/745,081.65 = 260,028.30/x
  3. Step 3: Cross multiply
    496,515.90x = 745,081.65 × 260,028.30
  4. Step 4: Simplify right side
    496,515.90x = 193,742,314,810.70
  5. Step 5: Solve for x
    x = 193,742,314,810.70/496,515.90
  6. Step 6: Final answer
    x = 390,203.65

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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.