Home / 282,782.75-390,242.81-155,459.25

Finding the Fourth Proportional to 282,782.75, 390,242.81 and 155,459.25

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Solution

The fourth proportional to 282,782.75, 390,242.81 and 155,459.25 is: 214,535.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,782.75 : 390,242.81 = 155,459.25 : x
  2. Step 2: Convert to fraction form
    282,782.75/390,242.81 = 155,459.25/x
  3. Step 3: Cross multiply
    282,782.75x = 390,242.81 × 155,459.25
  4. Step 4: Simplify right side
    282,782.75x = 60,666,854,949.14
  5. Step 5: Solve for x
    x = 60,666,854,949.14/282,782.75
  6. Step 6: Final answer
    x = 214,535.21

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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.