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Finding the Fourth Proportional to 478,562.65, 660,430.35 and 263,716.57

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Solution

The fourth proportional to 478,562.65, 660,430.35 and 263,716.57 is: 363,936.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,562.65 : 660,430.35 = 263,716.57 : x
  2. Step 2: Convert to fraction form
    478,562.65/660,430.35 = 263,716.57/x
  3. Step 3: Cross multiply
    478,562.65x = 660,430.35 × 263,716.57
  4. Step 4: Simplify right side
    478,562.65x = 174,166,425,307.32
  5. Step 5: Solve for x
    x = 174,166,425,307.32/478,562.65
  6. Step 6: Final answer
    x = 363,936.52

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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.