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Finding the Fourth Proportional to 366,945.40, 550,418.10 and 260,657.20

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Solution

The fourth proportional to 366,945.40, 550,418.10 and 260,657.20 is: 390,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,945.40 : 550,418.10 = 260,657.20 : x
  2. Step 2: Convert to fraction form
    366,945.40/550,418.10 = 260,657.20/x
  3. Step 3: Cross multiply
    366,945.40x = 550,418.10 × 260,657.20
  4. Step 4: Simplify right side
    366,945.40x = 143,470,440,775.32
  5. Step 5: Solve for x
    x = 143,470,440,775.32/366,945.40
  6. Step 6: Final answer
    x = 390,985.80

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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.