Home / 406,275.76-609,040.38-139,972.96

Finding the Fourth Proportional to 406,275.76, 609,040.38 and 139,972.96

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Solution

The fourth proportional to 406,275.76, 609,040.38 and 139,972.96 is: 209,830.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,275.76 : 609,040.38 = 139,972.96 : x
  2. Step 2: Convert to fraction form
    406,275.76/609,040.38 = 139,972.96/x
  3. Step 3: Cross multiply
    406,275.76x = 609,040.38 × 139,972.96
  4. Step 4: Simplify right side
    406,275.76x = 85,249,184,748.12
  5. Step 5: Solve for x
    x = 85,249,184,748.12/406,275.76
  6. Step 6: Final answer
    x = 209,830.84

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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.