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Finding the Fourth Proportional to 437,580.30, 655,386.30 and 260,433.30

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Solution

The fourth proportional to 437,580.30, 655,386.30 and 260,433.30 is: 390,064.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,580.30 : 655,386.30 = 260,433.30 : x
  2. Step 2: Convert to fraction form
    437,580.30/655,386.30 = 260,433.30/x
  3. Step 3: Cross multiply
    437,580.30x = 655,386.30 × 260,433.30
  4. Step 4: Simplify right side
    437,580.30x = 170,684,416,883.79
  5. Step 5: Solve for x
    x = 170,684,416,883.79/437,580.30
  6. Step 6: Final answer
    x = 390,064.22

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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.