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Finding the Fourth Proportional to 366,903.40, 550,355.10 and 260,615.20

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Solution

The fourth proportional to 366,903.40, 550,355.10 and 260,615.20 is: 390,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,903.40 : 550,355.10 = 260,615.20 : x
  2. Step 2: Convert to fraction form
    366,903.40/550,355.10 = 260,615.20/x
  3. Step 3: Cross multiply
    366,903.40x = 550,355.10 × 260,615.20
  4. Step 4: Simplify right side
    366,903.40x = 143,430,904,457.52
  5. Step 5: Solve for x
    x = 143,430,904,457.52/366,903.40
  6. Step 6: Final answer
    x = 390,922.80

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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.