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Finding the Fourth Proportional to 528,991.20, 793,486.78 and 155,014.20

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Solution

The fourth proportional to 528,991.20, 793,486.78 and 155,014.20 is: 232,521.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,991.20 : 793,486.78 = 155,014.20 : x
  2. Step 2: Convert to fraction form
    528,991.20/793,486.78 = 155,014.20/x
  3. Step 3: Cross multiply
    528,991.20x = 793,486.78 × 155,014.20
  4. Step 4: Simplify right side
    528,991.20x = 123,001,718,412.28
  5. Step 5: Solve for x
    x = 123,001,718,412.28/528,991.20
  6. Step 6: Final answer
    x = 232,521.29

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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.