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Finding the Fourth Proportional to 403,315.99, 604,969.87 and 103,795.40

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Solution

The fourth proportional to 403,315.99, 604,969.87 and 103,795.40 is: 155,692.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,315.99 : 604,969.87 = 103,795.40 : x
  2. Step 2: Convert to fraction form
    403,315.99/604,969.87 = 103,795.40/x
  3. Step 3: Cross multiply
    403,315.99x = 604,969.87 × 103,795.40
  4. Step 4: Simplify right side
    403,315.99x = 62,793,089,644.60
  5. Step 5: Solve for x
    x = 62,793,089,644.60/403,315.99
  6. Step 6: Final answer
    x = 155,692.04

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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.