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Finding the Fourth Proportional to 505,307.03, 697,312.42 and 275,855.42

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Solution

The fourth proportional to 505,307.03, 697,312.42 and 275,855.42 is: 380,674.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,307.03 : 697,312.42 = 275,855.42 : x
  2. Step 2: Convert to fraction form
    505,307.03/697,312.42 = 275,855.42/x
  3. Step 3: Cross multiply
    505,307.03x = 697,312.42 × 275,855.42
  4. Step 4: Simplify right side
    505,307.03x = 192,357,412,319.80
  5. Step 5: Solve for x
    x = 192,357,412,319.80/505,307.03
  6. Step 6: Final answer
    x = 380,674.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.