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Finding the Fourth Proportional to 282,614.67, 390,003.93 and 155,287.53

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Solution

The fourth proportional to 282,614.67, 390,003.93 and 155,287.53 is: 214,294.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,614.67 : 390,003.93 = 155,287.53 : x
  2. Step 2: Convert to fraction form
    282,614.67/390,003.93 = 155,287.53/x
  3. Step 3: Cross multiply
    282,614.67x = 390,003.93 × 155,287.53
  4. Step 4: Simplify right side
    282,614.67x = 60,562,746,979.99
  5. Step 5: Solve for x
    x = 60,562,746,979.99/282,614.67
  6. Step 6: Final answer
    x = 214,294.42

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1.5x scale

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.