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Finding the Fourth Proportional to 768,803.30, 1,153,315 and 236,369.03

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Solution

The fourth proportional to 768,803.30, 1,153,315 and 236,369.03 is: 354,587.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,803.30 : 1,153,315 = 236,369.03 : x
  2. Step 2: Convert to fraction form
    768,803.30/1,153,315 = 236,369.03/x
  3. Step 3: Cross multiply
    768,803.30x = 1,153,315 × 236,369.03
  4. Step 4: Simplify right side
    768,803.30x = 272,607,947,834.45
  5. Step 5: Solve for x
    x = 272,607,947,834.45/768,803.30
  6. Step 6: Final answer
    x = 354,587.38

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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.